In Peru, the Andean Swift flies over dry Andean slopes and valleys. It has gray-brown upperparts and white neck and rump bands; underpart coloration differs on the eastern slope.
The upperparts are gray-brown with a white collar and rump band. The underparts are white with dusky flanks and lower belly; birds on the eastern slope of southeastern Peru are mostly white below.
It flies swiftly over the Andes and takes food while in flight.
It is highly gregarious and catches aerial insects.
It has a white collar, a narrow white edge along the trailing secondaries, and a forked tail.
An extinction-risk assessment has not been added yet.