Cathartes aura (Linnaeus, 1758)

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 : 425-426

Cathartes aura (Linnaeus, 1758)

Figure 4E

Observations. ARGENTINA • Multiple (no sexual dimorphism); Corrientes, La Cruz, Paraje Tres Cerros; 29° 06′38′′S, 056°55′50′′W. Often recorded flying on ther- mals above the rocky outcrops in mixed flocks .

Identification. Similar to Yellow-headed Vulture ( C. burrovianus Cassin, 1845 ) and Black Vulture ( Coragyps atratus Bechstein, 1783 ). It was identified by head and neck reddish and whitish ventral surface of remiges.

Cathartes burrovianus (Cassin, 1845)

Observations. ARGENTINA • 1 (no sexual dimorphism); Corrientes, La Cruz, Paraje Tres Cerros; 29°09′ 03′′S, 056°49′18′′W .

Identification. Differs from other vultures by its yellow bare skin on the head and neck.