taxonID	type	description	language	source
773D87F0FF9EDA49A8B14CA0FEF5BAB8.taxon	vernacular_names	NOCTURNAL CURASSOW	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9EDA49A8B14CA0FEF5BAB8.taxon	distribution	Thought to range mainly below 400 m, but recently documented at 1,481 m (Medrano-Vizcaíno & Rueda 2018). Considered rare and poorly known but recent camera-trap studies have contributed to our understanding of this enigmatic species (Solano-Ugalde & Real-Jibaja 2010, van der Hoek et al. 2018, Link et al. 2022). N. urumutum was among the most frequently recorded bird species in camera-trap photographs at c. 950 m (Table 1), always during daylight hours (06.00 ‒ 17.00 h). The images also document regular visits to a mineral lick, often in groups of up to four (Fig. 3), behaviour first reported recently for the species (Griffiths et al. 2020). We twice encountered family groups with dependent young (during daylight hours) and detected N. urumutum regularly by voice at night as birds called from midstorey perches.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9EDA4BA8B14D60FC47BF5A.taxon	vernacular_names	GREY TINAMOU	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9EDA4BA8B14D60FC47BF5A.taxon	conservation	Rare across its circum-Amazonian distribution and considered Vulnerable at both global (IUCN 2023) and national levels (Freile et al. 2019). In Ecuador, known only from midelevations at 400 – 1,600 m (Ridgely & Greenfield 2001, Freile & Restall 2018). Chapman (1926) cited Salvadori & Festa (1900) who listed a specimen from ‘ San José’ and Paynter (1993) incorrectly stated ‘ this probably San José Nuevo’, but the itinerary for Enrico Festa in Chapman (1926) indicates that the specimen is correctly traced to Morona-Santiago province in south Ecuador. We regard the species as rare at San José de Sumaco, with presence documented by sound-recordings and camera-trap photographs.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9CDA49A8B14DB7FD04BF8D.taxon	vernacular_names	SPOT-FRONTED SWIFT	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9CDA49A8B14DB7FD04BF8D.taxon	conservation	Rare in Ecuador (Marín 1993, Ridgely & Greenfield 2001) and considered Data Deficient at both global (IUCN 2023) and national levels (Freile et al. 2019).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9CDA49A8B14DB7FD04BF8D.taxon	distribution	We observed the species regularly in small numbers and obtained photographs, typically late in the day, as swifts made regular movements from the south-east to north-west, perhaps returning from the lowlands to nesting or roosting sites at higher elevations on Volcán Sumaco. C. cherriei was typically seen with other swifts including the more numerous White-collared Streptoprocne zonaris and Chestnut-collared Swifts S. rutilus.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9CDA49A8B14C92FD22BCAB.taxon	vernacular_names	WHITE-CHINNED SWIFT	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9CDA49A8B14C92FD22BCAB.taxon	distribution	Rare and poorly known in Ecuador (Marín 1993, Ridgely & Greenfield 2001). Review of several thousand photographs suggests that C. cryptus is the commonest of the three Cypseloides at San José de Sumaco. As with the previous species, C. cryptus was typically seen in mixed groups of swifts that included larger numbers of White-collared Streptoprocne zonaris and Chestnut-collared Swifts S. rutilus. Cypseloides were sometimes present overhead throughout the day but were most often seen in early evening while feeding or transiting over the RBBR Research Station clearing (Fig. 4).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9CDA49A8B149FDFD8DBBB7.taxon	vernacular_names	SALVIN’S CURASSOW	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9CDA49A8B149FDFD8DBBB7.taxon	conservation	Considered Near Threatened (Freile et al. 2019) in Ecuador, where found mainly below 400 m (Freile & Restall 2018) although Ridgely & Greenfield (2001) noted historical records from 700 ‒ 900 m and there are recent reports at 800 and 900 m in southern Ecuador (Ordóñez-Delgado et al. 2017, Pozo-Zamora et al. 2022). We encountered M. salvini regularly in the vicinity of the RBBR at c. 950 m, and the species was among the most frequently recorded by camera-traps (Table 1).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9CDA49A8B148FFFC79B8B5.taxon	vernacular_names	RUFOUS-VENTED GROUND CUCKOO	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9CDA49A8B148FFFC79B8B5.taxon	conservation	Forest-dependent and rare across its vast range. Considered Vulnerable by IUCN (2023) and Near Threatened in Ecuador (Freile et al. 2019).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9CDA49A8B148FFFC79B8B5.taxon	materials_examined	Chapman (1926) listed three males in AMNH. These are AMNH 179093 – 094 taken at ‘ San José de Sumarco’ [sic] on 20 and 21 March 1923, and AMNH 179095 taken ‘ below San José de Sumarco’ [sic] ’ on 31 March 1923. One was heard calling at the RBBR Research Station at c. 950 m on 8 – 10 December 2020. Another was reportedly seen nearby on 21 July 2022 (R. McKay in litt. 2022).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9CDA49A8B14AF5FEF6BE6E.taxon	vernacular_names	LONG-TAILED POTOO	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9CDA49A8B14AF5FEF6BE6E.taxon	distribution	Rare and local in east Ecuador, where reported mainly in terra firme forest below 700 m (Ridgely & Greenfield 2001, Freile & Restall 2018).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9CDA49A8B14AF5FEF6BE6E.taxon	materials_examined	A female at AMNH (178975) was taken on 31 March 1923 ‘ below San José’ (Chapman 1926). We did not encounter the species during our survey.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9CDA49A8B14BFAFECFB9B0.taxon	vernacular_names	OILBIRD	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF9CDA49A8B14BFAFECFB9B0.taxon	distribution	Locally distributed in the Ecuadorian Andes and adjacent eastern lowlands (Freile & Restall 2018). Undertakes local or seasonal movements away from nesting areas (Cárdenas et al. 2020) with a colony recently reported from lowlands on the río Pusuno in southern Napo province (Cisneros-Heredia et al. 2012). We have reports from December ‒ April and the species is documented by a sound-recording made on 9 April 2022 at the RBBR Research Station at c. 950 m.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA47A8B14B1CFBF8B916.taxon	vernacular_names	LONG-TAILED SYLPH	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA47A8B14B1CFBF8B916.taxon	distribution	A mid-montane species (sensu Stotz et al. 1996) considered to range above 1,600 m in Ecuador (Ridgely & Greenfield 2001, Freile & Restall 2018).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA47A8B14B1CFBF8B916.taxon	materials_examined	Chapman (1926) listed two females from ‘ below San José’, presumably AMNH 179059 – 060 taken on 12 ‒ 13 March 1923. These specimens might document a low-elevation occurrence but, because the precise elevation where they were taken is uncertain, we do not regard the record as documenting an elevational range extension. We did not encounter the species during our field work.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA45A8B14CF9FBD3BB98.taxon	vernacular_names	LITTLE WOODSTAR	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA45A8B14CF9FBD3BB98.taxon	conservation	Rare and poorly known. Considered Near Threatened by IUCN (2023) and Vulnerable in Ecuador (Freile et al. 2019).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA45A8B14CF9FBD3BB98.taxon	distribution	Most Ecuadorian records are from the Pacific slope, but it is known also from the east slope foothills of Morona-Santiago and Zamora-Chinchipe provinces in southern Ecuador (Chapman 1926, Collar et al. 1992, Janni 2004). Chapman (1926) mentioned two female specimens in AMNH from ‘ below San José’, documenting occurrence on the east slope north to the Volcán Sumaco region (see Zimmer 1953, Ridgely & Greenfield 2001) but there have been no reports from the area since. We located just one female at AMNH (179065). The label reads ‘ below San José de Sumarco [sic]. E. Ecuador. Tropical Zone’ Date: Mch. 16, 1923. On the reverse is ‘ Olalla & Sons’. The original collectors tag reads ‘ 16 Marzo 1923 H. P. [= hembra pequeño indicating a female with small ovaries] S. José abajo. Olalla y Hijos Ecuador’. Although this specimen shows a few rufous feathers on the rump, it agrees with other female specimens of C. bombus at AMNH (n = 11) and differs from those of Gorgeted Woodstar C. heliodor cleavsi (n = 6) in its narrower-based bill, straighter (less decurved) culmen, and more extensive black on the rectrices (Fig. 4).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA47A8B149A2FC3BBB19.taxon	vernacular_names	WHITE-CHESTED SWIFT	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA47A8B149A2FC3BBB19.taxon	distribution	Rare and long known only from south-west Colombia but recently reported from east Ecuador, Peru and Bolivia (Ridgely & Greenfield 2001, Howell 2002, Roesler et al. 2009). C. lemosi was the least common Cypseloides at San José de Sumaco (Fig. 4) and was typically seen with larger numbers of White-collared Swift Streptoprocne zonaris.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA47A8B14D38FBBABFB2.taxon	vernacular_names	PINK-THROATED BRILLIANT	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA47A8B14D38FBBABFB2.taxon	conservation	Endemic to east Andean foothills. Considered Vulnerable in Ecuador and formerly globally by IUCN (2016).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA47A8B14D38FBBABFB2.taxon	distribution	Rare, local, and poorly known in Ecuador with records from Sucumbíos, Orellana, Napo and Zamora-Chinchipe provinces (Ridgely & Greenfield 2001, Pitman et al. 2002, Freile et al. 2013).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA47A8B14D38FBBABFB2.taxon	materials_examined	Described by Gould (1860) from ‘ Río Napo’. Zimmer (1951) suggested the type locality be restricted to ‘ San José, Ecuador’ but his basis is unclear, and there is no indication that the holotype is from the locality San José de Sumaco worked by Olalla & Hijos. Specimens (one male, and five females) from ‘ below San José’ are mentioned in Chapman (1926). We located four of these in AMNH (179040 – 041, 185112 – 113). We found H. gularis to be fairly common and among the most frequently encountered hummingbirds in the forest interior (see also Freile et al. 2015). H. gularis was detected at 13 (42 %) of 31 forest transect points. An adult was photographed on a nest on 8 January 2020 (Fig. 4) and a nest with young was found on 8 November 2017 (G. M. Kirwan et al. pers. obs.).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA47A8B1481CFDD2B816.taxon	vernacular_names	ECUADORIAN PIEDTAIL	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA47A8B1481CFDD2B816.taxon	conservation	Restricted to east Andean foothills. Formerly considered Vulnerable by IUCN (2016) and treated as Near Threatened in Ecuador (Freile et al. 2019).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA47A8B1481CFDD2B816.taxon	materials_examined	Specimens (presumably AMNH 179053, 185059, 185062 – 063) from ‘ below San José’ were mentioned by Chapman (1926). Among the most frequently encountered hummingbirds of interior forest understorey at San José de Sumaco. We found P. hemileucurus at ten (32 %) of 31 forest interior-transect points and regard it as fairly common.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA47A8B14A1EFDB1B9F4.taxon	vernacular_names	RUFOUS-VENTED WHITETIP	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA47A8B14A1EFDB1B9F4.taxon	distribution	A mid-montane species (sensu Stotz et al. 1996) thought to range above 900 m in Ecuador (Ridgely & Greenfield 2001, Freile & Restall 2018) where considered Near Threatened (Freile et al. 2019).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF92DA47A8B14A1EFDB1B9F4.taxon	materials_examined	Chapman (1926) listed five males and two females from ‘ below San José’. We located five of these in AMNH (179050 – 179052, 185064, 185066). We have several recent sight reports from c. 950 m at RBBR.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF90DA45A8B14DE3FE2DBF78.taxon	vernacular_names	GREY-COWLED WOOD RAIL	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF90DA45A8B14DE3FE2DBF78.taxon	distribution	Widespread in South America’s lowlands. In Ecuador, known mainly from below 400 m (Ridgely & Greenfield 2001, Freile & Restall 2018). FE observed one at close range on 12 January 2016 at c. 950 m in tall forest near the BRBR Research Station. The all-grey neck and rufous breast were clearly visible. Another was reportedly heard in the same area on 28 November 2021 (H. Jacob).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF90DA45A8B14AE2FBDFBE98.taxon	vernacular_names	RED-WINGED WOOD RAIL	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF90DA45A8B14AE2FBDFBE98.taxon	conservation	Rare, poorly known and considered Near Threatened in Ecuador (Freile et al. 2019), but with a concentration of historical specimens (Chapman 1926, Norton 1965) and recent records in the Volcán Sumaco region of Napo and Orellana provinces (Ridgely & Greenfield 2001, Vaca et al. 2006).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF90DA45A8B14AE2FBDFBE98.taxon	materials_examined	Four specimens in AMNH 178884 – 885, 185353, 185255) are labelled ‘ San José Abajo’ and ‘ San José de Sumarco’ [sic]. We encountered the species sporadically at c. 950 m and obtained sound-recordings, camera-trap photographs (Fig. 3) and video.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF90DA45A8B148E2FD09B879.taxon	vernacular_names	NAPO SABREWING	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF90DA45A8B148E2FD09B879.taxon	conservation	Confined to east Andean foothills and considered Near Threatened (IUCN 2023, Freile et al. 2019).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF90DA45A8B148E2FD09B879.taxon	materials_examined	Five specimens from ‘ below San José’ (AMNH 179015 – 016, 185132 – 133, 185135) were mentioned by Chapman (1926). We encountered the species regularly and obtained photographs (Fig. 4). C. villaviscensio was detected at three (10 %) of 31 forest-interior transect points and we consider it uncommon.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF90DA45A8B14C83FE9ABC58.taxon	vernacular_names	CRESTED EAGLE	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF90DA45A8B14C83FE9ABC58.taxon	conservation	Rare. Considered Near Threatened by IUCN (2023) and Vulnerable in Ecuador (Freile et al. 2019).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF90DA45A8B14C83FE9ABC58.taxon	distribution	In eastern Ecuador, generally confined to lowlands below 300 m (Freile & Restall 2018).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF90DA45A8B14C83FE9ABC58.taxon	materials_examined	A female at AMNH (178949) was taken on 23 March 1923 by Olalla & Hijos and was listed by Chapman (1926) with locality ‘ below San José’ (hence, the precise elevation is uncertain).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF90DA45A8B14B82FE16B998.taxon	vernacular_names	GREY-WINGED TRUMPETER	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF90DA45A8B14B82FE16B998.taxon	conservation	Considered Near Threatened in Ecuador (Freile et al. 2019) where known mainly from below 700 m (Freile & Restall 2018) but P. crepitans was the most frequently recorded species in camera-trap photographs (c. 950 m), accounting for 1,085 (65 %) of 1,669 independent events and typically was recorded in large groups.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF90DA45A8B14B82FE16B998.taxon	distribution	Together, a set of large-bodied terrestrial species comprising Great Tinamou Tinamus major, P. crepitans, Salvin’s Curassow Mitu salvini and Nocturnal Curassow Nothocrax urumutum, accounted for 1,376 (82 %) of the total 1,669 events (Table 1).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14C03FC59BFD8.taxon	vernacular_names	RED-AND-GREEN MACAW	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14C03FC59BFD8.taxon	conservation	Rare and local in east Ecuador (Ridgely & Greenfield 2001) where known mainly from the lowlands below 500 m (Freile & Restall 2018) and considered Vulnerable (Freile et al. 2019).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14C03FC59BFD8.taxon	materials_examined	A female specimen was mentioned by Chapman (1926), presumably AMNH 178951 taken on 31 March 1923 ‘ below San José’, but we could not locate the specimen. We photographed and obtained sound-recordings from a pair at c. 950 m on 11 August 2019.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14B02FDF5B8F8.taxon	vernacular_names	SOLITARY EAGLE	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14B02FDF5B8F8.taxon	conservation	Rare and local throughout its vast range and considered Near Threatened (IUCN 2023).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14B02FDF5B8F8.taxon	distribution	Reported from several sites in the east Andean foothills of adjacent Napo province (Ridgely & Greenfield 2001) but regarded as Critically Endangered in Ecuador (Freile et al. 2019). We photographed and obtained sound-recordings of an adult on 20 August 2018 on a steep ridge above the río Bigal c. 5 km north of the BRBR Research Station (Fig. 3). One was heard calling at the same site on 9 January 2020.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14DA3FDFBBEF8.taxon	vernacular_names	ORANGE-BREASTED FALCON	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14DA3FDFBBEF8.taxon	conservation	Rare and local. Considered Near Threatened by IUCN (2023) and Endangered in Ecuador (Freile et al. 2019).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14DA3FDFBBEF8.taxon	distribution	There have been occasional reports from San José de Sumaco. One was photographed on 21 January 2023 (Fig. 3).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14AE3FB8BBE58.taxon	vernacular_names	SUBTROPICAL PYGMY OWL	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14AE3FB8BBE58.taxon	distribution	Endemic to the East Andes. Relatively recently described (Robbins & Howell 1995) and poorly known (Freile & Castro 2013, Acevedo-Charry et al. 2015). Most Ecuadorian records are from above 1,100 m (Ridgely & Greenfield 2001, Freile & Restall 2018). One was soundrecorded near the BRBR Research Station at c. 950 m on 28 July 2021 (C. Fischer).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B149A2FE8ABAF8.taxon	vernacular_names	HARPY EAGLE	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B149A2FE8ABAF8.taxon	conservation	Rare, considered Vulnerable (IUCN 2023), and generally confined to elevations below 400 m.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B149A2FE8ABAF8.taxon	distribution	An adult was videotaped at c. 950 m near the BRBR on 25 August 2019 (L. Navarrete in litt. 2022).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14A02FBE2B998.taxon	vernacular_names	RUFESCENT SCREECH OWL	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14A02FBE2B998.taxon	distribution	Widespread in the subtropical Andes, but poorly known (Freile & Castro 2013). In Ecuador thought to range from 1,200 to 2,400 m (Freile & Restall 2018). One was documented by a sound-recording near the BRBR at c. 950 m on 18 September 2021 (P. Baruah; XC 676460).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14802FBE8BBF8.taxon	vernacular_names	SEMICOLLARED HAWK	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14802FBE8BBF8.taxon	conservation	Rare and poorly known (Bierregaard et al. 2022). Considered Near Threatened in Ecuador (Freile et al. 2019) where reported at 1,500 – 2,200 m (Ridgely & Greenfield 2001) but has been recorded as low as 600 m in Colombia (Hilty & Brown 1986).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA42A8B14802FBE8BBF8.taxon	distribution	Included here based on a sight record: ACV studied a single bird through a telescope as it perched motionless in the open crown of an emergent tree at the BRBR Research Station on 12 January 2019 at c. 950 m. Coarse barring on the underparts, dark ear-coverts, and a pale collar were clearly visible.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA43A8B14F23FDBFBAB9.taxon	vernacular_names	FIERY-THROATED FRUITEATER	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA43A8B14F23FDBFBAB9.taxon	conservation	Endemic to east Andean foothills where rare (Kirwan & Green 2011). Considered Vulnerable in Ecuador (Freile et al. 2019) and formerly considered Near Threatened by IUCN (2016).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF97DA43A8B14F23FDBFBAB9.taxon	materials_examined	Five specimens from ‘ below San José’ were mentioned by Chapman (1926). We located just one, a male (183718) at AMNH. In our field work, we encountered the species regularly in small numbers, often with mixed-species flocks that included various canopy-inhabiting tanagers. We consider it uncommon.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA41A8B14CA3FC69BB99.taxon	vernacular_names	BLACKISH ANTBIRD	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA41A8B14CA3FC69BB99.taxon	distribution	Chapman (1926) treated foothill populations of C. nigrescens as C. n. approximans and did not list San José de Sumaco (or any of its variant) for the species although he mentioned two males and two females taken by Olalla & Hijos at ‘ Lower Sumaco’.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA41A8B14CA3FC69BB99.taxon	materials_examined	Shortly after, Zimmer (1931) described C. n. aequatorialis, designating a female from that series taken on 9 January 1926 as the holotype (AMNH 184517). The allied lowland form C. fuscicauda described by Zimmer (1931), now treated as a separate species, Riparian Antbird, following Mayer et al. (2014), is not known from San José de Sumaco. Identification difficulties and a paucity of comparative material in museums has impeded understanding of the distributions of these forms. Two female specimens in MLZ (7639, 7688) were registered as Dusky Antbird C. tyrannina, later identified as C. fuscicauda (R. Terrill in litt. 2022), but from photographs they appear to be Black Antbird C. serva. A male (USNM 323078) taken by Olalla & Hijos on 20 April 1924, at ‘ Abajo, San José’, was received by USNM in exchange from AMNH in 1930 and catalogued as ‘ Cercomacra serva ’. The USNM label bears the notation ‘ Cercomacra nigricans A. W. ’ (= Alexander Wetmore) but this determination is puzzling in view of the bird’s uniform dark tail and is perhaps best explained as a lapsus for Cercomacra (now Cercomacroides) nigrescens. We found C. nigrescens infrequently and regard it as rare at San José de Sumaco where it is presumably represented by Zimmer’s aequatorialis.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA43A8B14A83FCFBBF59.taxon	vernacular_names	STRIATED ANTBIRD	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA43A8B14A83FCFBBF59.taxon	conservation	Widespread and common in south-west Amazonia (Ridgely & Tudor 2009) but rare and local in Colombia, and in Ecuador (Ridgely & Greenfield 2001, Freile & Restall 2018), where considered Endangered (Freile et al. 2019).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA43A8B14A83FCFBBF59.taxon	distribution	D. devillei is documented in Ecuador by a small number of specimens including five taken by Olalla & Hijos in present-day western Orellana province.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA43A8B14A83FCFBBF59.taxon	materials_examined	Two of these are from ‘ Río Suno, above Avila’ (AMNH 179319 – 320; Chapman 1926) with three from ‘ San José Abajo’ (AMNH 184460 – 462) taken on 30 – 31 March and 1 April 1924. There are also recent reports from Avila (Fig. 1) and near Archidona in neighbouring Napo province (Ridgely & Greenfield 2001; eBird). An obligate bamboo specialist (Kratter 1997, Parker et al. 1997), we found small numbers of D. devillei in a large stand of Guadua angustifolia bamboo at c. 950 m and obtained sound-recordings and photographs (Fig. 5). In Ecuador, previously known at 300 – 750 m (Freile & Restall 2018). Our records confirm the presence of the species at the site of the earliest Ecuadorian records (Chapman 1926) and extend the local elevational range to 950 m.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA43A8B148E2FBD1B878.taxon	vernacular_names	SHRIKE-LIKE COTINGA	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA43A8B148E2FBD1B878.taxon	distribution	Rare and local in the east Andean foothills of Ecuador (Ridgely & Greenfield 2001, Kirwan & Green 2011).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA43A8B148E2FBD1B878.taxon	conservation	Considered Near Threatened by IUCN (2023) and Vulnerable in Ecuador (Freile et al. 2019).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA43A8B148E2FBD1B878.taxon	materials_examined	A female specimen in the Moore Laboratory of Zoology, Los Angeles (MLZ 33855) was taken ‘ below San José’ by Carlos Olalla on 13 April 1927 (Fig. 5). We did not encounter the species and there seem to be no reports from San José de Sumaco.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA43A8B14B82FE01B978.taxon	vernacular_names	RÍO SUNO ANTWREN	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA43A8B14B82FE01B978.taxon	distribution	Described by Chapman (1925) from nearby ‘ Río Suno below Avila’ (LeCroy & Sloss 2000); considered rare in Ecuador (Ridgely & Greenfield 2001).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA43A8B14B82FE01B978.taxon	materials_examined	The holotype is a female (AMNH 184582). A second female in AMNH (184583) taken ‘ below San José’ was also mentioned by Chapman (1926). The widespread Slaty Antwren M. schisticolor has been considered an elevational replacement of this species (Whitney 1994) but the two are apparently syntopic at San José de Sumaco.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA43A8B149C2FC92BB98.taxon	vernacular_names	GREY-TAILED PIHA	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA43A8B149C2FC92BB98.taxon	distribution	Endemic to east Andean foothills and outlying ridges (Kirwan & Greene 2011).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA43A8B149C2FC92BB98.taxon	conservation	Considered Near Threatened in Ecuador (Freile et al. 2019) and formerly globally by IUCN (2016).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF96DA43A8B149C2FC92BB98.taxon	materials_examined	Chapman (1926) mentioned five specimens (AMNH 179616 – 617, 183735 – 736, 183835) from ‘ below San José’. Common and readily detected by its loud vocalisations. We found S. subalaris at 21 (68 %) of 31 forest-interior transect points.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF94DA41A8B14B82FD8BB978.taxon	vernacular_names	RUFOUS-TAILED FOLIAGE-GLEANER	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF94DA41A8B14B82FD8BB978.taxon	distribution	Considered rare and local in Ecuador (Ridgely & Greenfield 2001, Freile & Restall 2018).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF94DA41A8B14B82FD8BB978.taxon	materials_examined	Chapman (1926) mentioned five specimens from ‘ below San José’, of which we located three in New York (AMNH 184267, 184269, 184270). We encountered the species regularly in small numbers at c. 950 m and obtained photographs and sound-recordings. A. ruficaudata was typically found with canopy mixed-species flocks including various tanagers. We consider it an uncommon resident.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF94DA41A8B14A82FEE5BE98.taxon	vernacular_names	BROWN-RUMPED FOLIAGE-GLEANER	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF94DA41A8B14A82FEE5BE98.taxon	distribution	Rare in east Ecuador, mainly in Napo and Sucumbíos provinces at elevations below 600 m (Ridgely & Greenfield 2001). Considered a bamboo specialist in Peru (Parker 1982).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF94DA41A8B14A82FEE5BE98.taxon	materials_examined	A specimen in the Carnegie Museum, Pittsburgh (CM 142784) was taken by Carlos Olalla on 10 April 1927 at ‘ San José Nuevo’. Chapman (1926) mentioned four males and a female from ‘ below San José’. We found three specimens in AMNH (184287 – 288, 184290). There are occasional sight reports and one was photographed on 11 February 2023 at c. 950 m at San José de Sumaco.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF94DA41A8B14C83FBFEBC38.taxon	vernacular_names	CINNAMON MANAKIN-TYRANT	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF94DA41A8B14C83FBFEBC38.taxon	distribution	Rare in western Amazonia (Ridgely & Tudor 2009). In Ecuador, known mainly from below 400 m, but recently reported at c. 1,000 m in Morona-Santiago province (Pozo-Zamora et al. 2022). We encountered solitary individuals in forest understorey at c. 950 m and regard the species as rare at San José de Sumaco. One was photographed by FE on 25 August 2017.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF94DA41A8B14DE3FDADBF78.taxon	vernacular_names	ECUADORIAN TYRANNULET	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF94DA41A8B14DE3FDADBF78.taxon	conservation	Endemic to the east Andean foothills and considered Near Threatened (Freile et al. 2019, IUCN 2023).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF94DA41A8B14DE3FDADBF78.taxon	materials_examined	Not listed for the site by Chapman (1926), but there is a specimen in AMNH (184000) annotated ‘ Pogonotriccus orbitalis ’, taken on 19 April 1924 by Olalla & Hijos at ‘ San José abajo’. We encountered the species regularly with mixed-species flocks and consider it fairly common at San José de Sumaco.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF94DA41A8B148E2FD52B878.taxon	vernacular_names	SLENDER-BILLED XENOPS	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF94DA41A8B148E2FD52B878.taxon	distribution	Rare and poorly known in eastern Ecuador, where reported mainly below 600 m (Ridgely & Greenfield 2001, Freile & Restall 2018) but ranges at least locally to c. 1,000 m (Freile et al. 2022). One was photographed at c. 950 m as it foraged with a mixed-species flock on 28 July 2021 at RBBR. The similar Streaked Xenops X. rutilans is expected at this elevation, and has been reported from the area but without voucher.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8BDA5EA8B14CABFCEABC61.taxon	vernacular_names	RED-CRESTED FINCH	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8BDA5EA8B14CABFCEABC61.taxon	distribution	Formerly known in Ecuador only from Zamora-Chinchipe and Morona-Santiago provinces (Ridgely & Greenfield 2001, Freile et al. 2013, Freile & Restall 2018) and generally associated with arid scrub. Rapidly expanding north with deforestation, and recently reported in adjacent southern Colombia for the first time (Delgado & Rodríguez 2018). A male was photographed on 17 January 2020 in a cattle pasture at c. 800 m (Fig. 5) and another was photographed there on 6 February 2023. We regard it as very rare.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8BDA5EA8B14ACBFBCFBE61.taxon	vernacular_names	ACADIAN FLYCATCHER	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8BDA5EA8B14ACBFBCFBE61.taxon	distribution	A boreal migrant (Ridgely & Tudor 2009). In Ecuador, known mainly from the Pacific slope (Ridgely & Greenfield 2001, Freile & Restall 2018). We found one in a large stand of Guadua bamboo on 13 January 2020 and obtained a sound-recording and photographs (Fig. 6).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8BDA5EA8B14DABFE77BF61.taxon	vernacular_names	RUFOUS-NAPED GREENLET	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8BDA5EA8B14DABFE77BF61.taxon	conservation	Endemic to the north Andean foothills. In Ecuador, known mainly from the Volcán Sumaco region (Ridgely & Greenfield 2001) and considered Near Threatened (Freile et al. 2019).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8BDA5EA8B14DABFE77BF61.taxon	distribution	Now considered monotypic, but the type locality of P. s. leucogastra is ‘ below San José de Sumaco’ (Chapman 1924). P. semibrunnea was detected at ten (32 %) of 31 forest-interior transect points and we encountered the species regularly with mixed-species canopy flocks. We consider it fairly common.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8ADA5FA8B14B42FC33B958.taxon	vernacular_names	CASQUED CACIQUE	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8ADA5FA8B14B42FC33B958.taxon	distribution	Endemic to western Amazonia (Ridgely & Tudor 2009). Rare in Ecuador, where known mainly from below 300 m (Ridgely & Greenfield 2001).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8ADA5FA8B14B42FC33B958.taxon	materials_examined	A male (CM 102665) was taken on 30 March 1923 by Olalla & Hijos at ‘ San José abajo’. While this is from the period when these collectors were working for Chapman, and the specimen bears an AMNH label, Chapman (1926) did not list San José (or variants) in his monograph, but he listed five males taken in adjacent lowlands at ‘ Río Suno’. A second skin (MLZ 3802) was taken 2 April 1927 at ‘ San José Nuevo abajo’ by Carlos Olalla. We did not encounter the species.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8ADA5FA8B14842FDD7B838.taxon	vernacular_names	CERULEAN WARBLER	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8ADA5FA8B14842FDD7B838.taxon	conservation	A scarce boreal migrant. Considered Near Threatened by IUCN (2023) and Vulnerable in Ecuador (Freile et al. 2019).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8ADA5FA8B14842FDD7B838.taxon	materials_examined	Chapman (1926) mentioned specimens from ‘ below San José’ (AMNH 183542, 183544).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8ADA5FA8B14842FDD7B838.taxon	distribution	We know of only a small number of sight records, all in December ‒ January, and we suspect that our survey area at c. 950 m is slightly below the main wintering elevational range (Colorado et al. 2012). We regard the species as a rare winter resident at San José de Sumaco.	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8ADA5FA8B149A2FE7CBB38.taxon	vernacular_names	SLATE-COLOURED SEEDEATER	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
773D87F0FF8ADA5FA8B149A2FE7CBB38.taxon	distribution	A bamboo specialist that is perhaps nomadic (Willis & Eisenmann 1979). Rare in east Ecuador (Ridgely & Greenfield 2001). We obtained photographs and sound-recordings of several singing birds in the canopy of an extensive stand of Guadua angustifolia at c. 950 m on 8, 11 and 15 January 2020, and on 8 December 2020, including yellow-billed, greyplumaged, adult males (Fig. 5).	en	Vallely, Andrew C., Ertl, Frederick, Garcia, Thierry (2023): The edge of the subtropics: a preliminary list of the birds of San José de Sumaco, Ecuador. Bulletin of the British Ornithologists’ Club 143 (4): 424-463, DOI: 10.25226/bboc.v143i4.2023.a3, URL: https://doi.org/10.25226/bboc.v143i4.2023.a3
