They are superficially similar to swallows, but are actually not closely related to passerine species at all; swifts are in the separate order Apodiformes, which they share with hummingbirds.
Swifts are in the separate order Apodiformes, which they share with hummingbirds. They are superficially similar to swallows, but are not closely related to passerine species.
They are superficially similar to swallows, but are not closely related to passerine species. Swifts are in the separate order Apodiformes, which they share with hummingbirds.
They are superficially similar to swallows, but are not closely related to passerine species. Swifts are in the separate order Apodiformes, which they share with hummingbirds.