Dendrocygna viduata (Linnaeus, 1766)

Fernandez, Juan Manuel, Thomann, Luz, Fandiño, Blas, Cajade, Rodrigo & Hernando, Alejandra, 2021, An annotated checklist of birds of Paraje Tres Cerros, Corrientes province, Argentina, Check List 17 (2), pp. 415-443 : 423

Dendrocygna viduata (Linnaeus, 1766)

Figure 3D

Observations. ARGENTINA • Multiple; Corrientes, La Cruz, Paraje Tres Cerros; 29°07′10′′S, 056°54′20′′W. Sev- eral individuals in flooded grasslands and flying .

Identification. Distinguishable from other species in the genus Dendrocygna by the front of head and throat, white, and back of head black.

Dendrocygna autumnalis (Linnaeus, 1758) Observations. ARGENTINA • Multiple; Corrientes, La Cruz, Paraje Tres Cerros; 29°06′09′′S, 056°54′45′′W. Of- ten seen in groups near wetlands .

Identification. Distinguished from other ducks by its red bill, wing band white, rump and belly black.

Cairina moschata (Linnaeus, 1758)

Observations. ARGENTINA • 1♂; Corrientes, La Cruz, Paraje Tres Cerros; 29°09′31′′S, 056°49′51′′W. One adult male recorded near the reservoir .

Identification. Black. Identified by its large white patches on the wings. Caruncle red (absent in females). The color of the domestic breed’s plumage is more variable and has more pronounced caruncles.

Amazonetta brasiliensis (Gmelin, 1789)

Observations. ARGENTINA • 4 (2♀ 2 ♂); Corrientes, La Cruz, Paraje Tres Cerros; 29°09′31′′S, 056°49′51′′W. We recorded two pairs in mixed flocks with other wet- land-related species .

Identification. Predominantly brown. Speculum seen in flight green and blue. Males and females distinguished by facial pattern.