Least Nighthawk (Chordeiles pusillus) [XC404324]
by Jacob Wijpkema from Santa Rita do Novo Destino, Goi\u00e1s, Ch\u00e1cara Jayrson, Brazil (flight call)
Least Nighthawk (Chordeiles pusillus) [XC693413]
by Peter Boesman from Sabanitas, Inirida, Guainia, Colombia (call)
Subspecies
Sympatric with Bahian Nighthawk (Nyctiprogne vielliardi) in north-eastern Brazil.
The following 6 subspecies are recognised:
septentrionalis (Hellmayr, 1908) - Eastern Colombia east to western Surinam and possibly western Brazil.
esmeraldae Zimmer, JT & Phelps, 1947 - South-eastern Colombia, southern Venezuela and extreme north-western Brazil.
xerophilus Dickerman, 1988 - Extreme north-eastern Brazil (Paraiba, Pernambuco).
novaesi Dickerman, 1988 - North-eastern Brazil (Maranhío, Piauí).
pusillus Gould, 1861 - Eastern Brazil (Tocantins, Bahia, Goiás).
saturatus Pinto & Camargo, 1957 - West-central Brazil and extreme eastern Bolivia.