Ptilorrhoa castanonota (Salvadori, 1876)

Diamond, Jared & Bishop, K. David, 2021, Avifauna of the Adelbert Mountains, New Guinea: why is Fire-maned Bowerbird Sericulus bakeri the mountains’ only endemic bird species?, Bulletin of the British Ornithologists’ Club 141 (1), pp. 75-108 : 96

publication ID

https://doi.org/ 10.25226/bboc.v141i1.2021.a8

publication LSID

lsid:zoobank.org:pub:6D2353AF-B244-409B-AF02-944A06062AE

DOI

https://doi.org/10.5281/zenodo.12724341

persistent identifier

https://treatment.plazi.org/id/0388A018-FFE6-FFCC-C4BF-FC85FD60C7B3

treatment provided by

Felipe

scientific name

Ptilorrhoa castanonota
status

 

CHESTNUT-BACKED JEWEL-BABBLER Ptilorrhoa castanonota View in CoL and DIMORPHIC JEWEL-BABBLER P. geislerorum

Jewel-babblers were common and vocal at both of our sites, especially Kangarangate. At our higher elevation site, Munggur, where we heard and saw jewel-babblers from 1,170 to 1,655 m, all sightings were of the bicoloured (deep blue and rich chestnut) P. castanonota . At Kangarangate, most of our sightings were also of P. castanonota down to 1,000 m. However, we saw the duller, uniformly coloured P. geislerorum three times, at 1,070, 1,110 and 1,265 m: dull slate-blue individuals that were presumed males, and dull brown individuals presumed to be females. Calls of the two species seemed similar: paired notes, tsp‐tsp, the secondȱofȱeachȱpairȱlouder;ȱandȱaȱseriesȱofȱnotesȱonȱtheȱsameȱhighȱpitch,ȱtheȱfirstȱnotesȱshort,ȱ thenȱaȱlongȱnote,ȱandȱfinallyȱtheȱloudȱ tsp‐tsp. Gilliard collected both species in the Adelberts atȱ differentȱ sitesȱ butȱ similarȱ elevationsȱ(Gilliardȱ&ȱ LeCroyȱ1967:ȱ 66),ȱ asȱ didȱ Stevensȱ inȱ theȱ Herzog Mts. ( Greenway 1935: 55). Coates (1990: 66) found both species co-existing in the Adelberts, even on adjacent territories, at 800–1,220 m. The ecological relations between these species remain mysterious to us, because the other four co-existing species of Ptilorrhoa ( P. castanonota ,ȱSpottedȱ P. leucosticta, Blue P. caerulescens and Black-vented Jewel-babblers P. nigricrissus ) segregate cleanly by elevation ( Diamond et al. 2019: 455–456). P. geislerorum wasȱbelievedȱtoȱbeȱconfinedȱtoȱtheȱnorthernȱwatershedȱofȱsouth-eastȱNewȱGuineaȱwestȱtoȱtheȱ Adelberts,ȱuntilȱVerhelstȱ&ȱPottierȱ(2020)ȱsurprisinglyȱdiscoveredȱ P. geislerorum or a similar taxon sharing Yapen Island with P. castanonota .

Kingdom

Animalia

Phylum

Chordata

Class

Aves

Order

Passeriformes

Family

Psophodidae

Genus

Ptilorrhoa

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