Ashy-tailed Swift vs Chestnut-collared Swift
Chaetura andrei comparado con Streptoprocne rutila
Side-by-Side Comparison
| Atributo | Ashy-tailed Swift | Chestnut-collared Swift |
|---|---|---|
| Nombre científico | Chaetura andrei | Streptoprocne rutila |
| Orden | Caprimulgiformes | Caprimulgiformes |
| Familia | Apodidae | Apodidae |
| Estado de conservación | Vulnerable | Least Concern |
| Longitud | — | — |
| Envergadura | 22,3 cm (8.8 in) | 26,0 cm (10.2 in) |
| Peso | 17,1 g (0.60 oz) | 21,8 g (0.77 oz) |
| Dieta | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … |
| Tamaño de la puesta | -- | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Ashy-tailed Swift
Dry rattling chatter with sharp staccato onset; brief bursts of clicking notes followed by descending hissing sound.
Chestnut-collared Swift
High, screaming trill; rapid 'scree-scree' in flight; shrill and penetrating; calls over Neotropical mountains and canyon edges; alarm a rapid screeching chatter
Geographic Range & Migration
Ashy-tailed Swift
Found in eastern Brazil, Bolivia, Paraguay, and northern Argentina. Partially migratory; moves north in austral winter. Lowland forest.
Chestnut-collared Swift
Found from Mexico and the Caribbean south through Central America and South America to Argentina. Resident in highlands near mountain cliffs.
Estado de conservación
Ashy-tailed Swift
Chestnut-collared Swift
How to Tell Them Apart
Ashy-tailed Swift
Small; dark sooty-brown overall; distinctly pale ashy-grey rump and tail contrasting with dark body; underparts dark grey-brown; ashy rump and tail the defining feature separating it from other South American …
Chestnut-collared Swift
Dark blackish-brown body with diagnostic rich chestnut collar encircling entire neck; collar bold and complete; underparts slightly paler brown; small swift with striking warm-toned neck band contrasting vividly with dark …
About These Birds
Ashy-tailed Swift
Vencejo de Andrei (Chaetura andrei), 11–12 cm. Plumaje gris parduzco oscuro; rabadilla gris más pálida. Cola muy corta. Habita en el noreste de América del Sur (Venezuela, Trinidad, Brasil). Gregario; forrajea en vuelo capturando insectos. Nidifica en huecos de árboles o chimeneas.
Chestnut-collared Swift
A small swift (13-14 cm) found from Mexico through Central America and South America to Bolivia and Brazil. Dark plumage with a distinctive chestnut collar and throat. Aerial insectivore, often foraging in mixed-species swift flocks over forests and highlands.