Gray-rumped Swift (Chaetura cinereiventris)

Order: Apodiformes | Family: Apodidae | IUCN Status: Least Concern

Age: Adult | Sex: Unknown | Loc. Eastern Ecuador, Amazonas Brazil

Age: Adult | Sex: Unknown | Loc. Eastern Ecuador

Age: Adult | Sex: Unknown | Loc. Mato Grosso, Brazil

Age: Adult | Sex: Unknown | Loc. Mato Grosso, Brazil

Identification & Behavior: ~11 cm (4.3 in). The Gray-rumped Swift has dusky back with a whitish gray rump (sclateri) or gray (occidentalis) and uppertail coverts that seem to extend towards near the tip of the tail; with little of the dusky tail visible. The underparts are uniformly gray-brown. It is the smallest of the Chaetura swifts and can be distinguished by its constant flapping of the wings when the bird flies on all direction. It is very similar to the larger Pale-rumped Swift, but is distinguished by a smaller size, a constant flapping of the wings during flight, and the color of the rump that seems to extend to nearly the tip of the tail.

Status: The Gray-rumped Swift is uncommon and widespread in Amazonia where it is known to range up to 1500 m along the foothill of the Andes. It also occurs in the humid forest of northwest Peru in Tumbes, generally on the foothills. It also occurs in Co, Ec, Br, and Bo.

Name in Spanish: Vencejo de Lomo Gris.

Sub-species: Gray-rumped Swift (Chaetura cinereiventris occidentalis) Berlepsch and Taczanowski, 1884. W Colombia, W Ecuador and extreme NW Peru (Tumbes).
(Chaetura cinereiventris sclateri) Pelzeln, 1868. Through Colombia, NW Brazil (upper Amazonia) and E Peru to NW Bolivia.

Meaning of Name: Chaetura: Gr. Khaitē=  long flowing hair and oura=  tail. cinereiventris: L. cinereus= ash-coloured and venter= ventris belly.

See more of the Family Apodidae   peru aves

Distribution Map


    • Species range based on: Schulenberg, T. S., D. F. Stotz, and L. Rico. 2006. Distribution maps of the birds of Peru, version 1.0. Environment, Culture & Conservation (ECCo). The Field Museum. on 08/01/2015.