Swifts (Apodidae)

White-naped Swift (Streptoprocne semicollaris) - HBW 5, p. 422

French: Martinet à nuque blanche German: Weißnackensegler Spanish: Vencejo Nuquiblanco Mexicano

Taxonomy: Acanthylis semicollaris DeSaussure, 1859, San Joaquín, near Mexico City.
Previously placed in monospecific genus Semicollum, largely on the basis of nesting behaviour, but recent research has invalidated this opinion. Alternatively, has at times been linked with Cypseloides senex in genus Aerornis. Monotypic.

Distribution: W Mexico, in highlands of Chihuahua, Sinaloa, Nayarit, Hidalgo, Morelos and México.