Polynesian Swiftlet vs White-collared Swift
Aerodramus leucophaeus comparado con Streptoprocne zonaris
Side-by-Side Comparison
| Atributo | Polynesian Swiftlet | White-collared Swift |
|---|---|---|
| Nombre científico | Aerodramus leucophaeus | Streptoprocne zonaris |
| Orden | Caprimulgiformes | Caprimulgiformes |
| Familia | Apodidae | Apodidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 23,7 cm (9.3 in) | 42,5 cm (16.7 in) |
| Peso | 13,4 g (0.47 oz) | 106,45 g (3.75 oz) |
| Dieta | Aerial insectivore catching tiny flying insects, midges, and airborne spiders in fast low-altitude flight near … | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| Tamaño de la puesta | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Polynesian Swiftlet
High twittering; thin 'chip-chip' over French Polynesian islands; echolocation clicks in cave roosts; light-colored underparts distinguish it visually; calls unremarkable
White-collared Swift
Loud, screaming 'shreee-shreee'; powerful screeching trill; calls from large flocks over mountains; very audible; one of the loudest Neotropical swifts; alarm a harsh rattle
Geographic Range & Migration
Polynesian Swiftlet
Found across French Polynesia including the Society Islands, Marquesas, and Tuamotu. Resident in forest and open areas; nests in sea caves.
White-collared Swift
Found from Mexico south through Central America to South America east of the Andes, reaching Bolivia and southern Brazil. Often in large flocks.
Estado de conservación
Polynesian Swiftlet
White-collared Swift
How to Tell Them Apart
Polynesian Swiftlet
Small; dark brown-grey upperparts with minimal gloss; pale grey rump band; underparts whitish-grey; forked tail; East Polynesian endemic from Society Islands; slightly more uniformly dark than some Pacific congeners.
White-collared Swift
Large; glossy blue-black plumage with bold broad white collar encircling entire neck; collar clean and complete; underparts black; large slightly forked tail; among the most recognisable Neotropical swifts due to …
About These Birds
Polynesian Swiftlet
El vencejo de la Polinesia habita en las islas de la Polinesia francesa. Nidifica en cuevas y escarpes rocosos. Vulnerable a los cambios medioambientales y los depredadores introducidos. Familia Apodidae.
White-collared Swift
A very large swift (20-22 cm, wingspan 45-55 cm) with a bold white collar band, the largest New World swift. Found from Mexico to southern Brazil and the Caribbean. Aerial insectivore, foraging in large, noisy flocks over forests and cities. Nests behind waterfalls and in caves.