Colonies of this swift are found flying in circling flocks high over head near cliffs, canyons and other vertical faces such as tall buildings. The White-throated Swifts can fly at incredibly fast speeds as they pursue insects in the air or in mating courtships. They roost at night clinging to vertical surfaces, and during cold nights, they can lower their body temperatures to reduce energy needs. The nest is glued to creviced rocks using saliva and feathers.
The four-digit banding code is WTSW.
