Cypseloides senex (Temminck, 1826)

Vitorino, Breno Dias, Vilas Boas da Frota, Angélica, Ikeda Castrillon, Solange Kimie & Nunes, Josué Ribeiro da Silva, 2018, Birds of Estação Ecológica da Serra das Araras, state of Mato Grosso, Brazil: additions and review, Check List 14 (5), pp. 893-922 : 904

Cypseloides senex (Temminck, 1826)

We recorded the species systematically in February and March 2017 (Area A) and in August 2017 (Area B). During the rest of the study, we made additional random contacts with this species. On many occasions, groups of individuals (> 40) were recorded in flight. Identified in the field by its whitish head contrasting with the rest of the body, a characteristic not seen in its congener Cypseloides fumigatus (Streubel, 1848) , according to Sick (1997).