From Opus

Genus: Cypseloides

[edit] Description

A genus of Swifts in the New World, mainly in South America and Central America. Believed by some authors to be the most ancient genus in the family (together with Streptoprocne).
All species have brown to blackish plumage and no other distinct plumage characteristic (except White-chested Swift and to a lesser degree Spot-fronted Swift). It's very difficult to tell them apart in the field and our knowledge about some species is very limited.
Like other Swifts they are foraging in the air, taking different kind of insects. Most species are highly greagrious and are often found in mixed flocks with other Swifts.

[edit] Taxonomy

Cypseloides is a genus in the Family Apodidae.
Tepui Swift and Chestnut-collared Swift are sometimes also placed in this genus.