Brazilian name: Taperuçu-de-coleira-falha
Chapada Diamantina, Bahia, Brazil
The Biscutate Swift is distributed in eastern Brazil from Piauí to Rio Grande do Sul and into adjacent areas of north-eastern Argentina. It appears to be partly or wholly migratory but its movement are not fully understood according to HBW which says that it is possibly a transequatorial migrant.
Consulting Wikiaves on 8th September 2009, there
are 4 photos for this species from the states of Minas Gerais
(August and December), Rio de Janeiro (October) and Parana
(January) to set beside these photos from Bahia in October.
Guy Kirwan, in an article in Neotropical Birding, Number 2, Pages 24 to 26 gives
features that allow the identification of Biscutate from
White-collared Swifts. The easiest feature with good views as in
photo 1 is the broken white collar of the Biscutate but he
also mentions that the white on the neck of the Biscutate is
overall distinctly broader than on White-collared and that
Biscutate shows a paler forehead, chin and lores.
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