The sooty swift is a species of bird in subfamily Cypseloidinae of the swift family Apodidae. It is found in Argentina, Brazil, and Paraguay.
Region
Southeastern South America
Typical Environment
Occurs from southeastern Brazil into eastern Paraguay and northeastern Argentina, primarily within the Atlantic Forest biome. It favors steep ravines, cliffs, and gorges, especially where waterfalls create constant spray. Nesting sites are typically behind falls or on damp cliff faces. Foraging occurs over forest canopies, rivers, and open areas near escarpments. It is generally local but can be fairly common where suitable waterfalls are available.
Altitude Range
Sea level to 1800 m
Climate Zone
Subtropical
Ease of Keeping
Beginner friendly: 1/5
The sooty swift often nests behind or beside waterfalls, fixing its moss-lined cup to wet rock with saliva. It spends most of its life on the wing, drinking and bathing in mid-air and landing mainly to breed. Flocks frequently wheel low through spray zones, where their dark plumage can be mistaken for bats at dusk.
Temperament
social and active
Flight Pattern
strong flier with rapid, stiff wingbeats; fast, direct flight
Social Behavior
Often forms small to medium flocks that forage together over rivers and forested slopes. Breeds colonially on vertical, wet rock near waterfalls, where pairs build cup nests of moss and saliva. Both parents share incubation and chick-rearing duties.
Migratory Pattern
Resident
Song Description
Vocalizations are high, thin chips and buzzy, twittering calls given in flight. Around colonies, birds emit sharper chatters and squeaks that carry over the noise of falling water.
