Mountain Swiftlet vs Chestnut-collared Swift
Aerodramus hirundinaceus comparado con Streptoprocne rutila
Side-by-Side Comparison
| Atributo | Mountain Swiftlet | Chestnut-collared Swift |
|---|---|---|
| Nombre científico | Aerodramus hirundinaceus | Streptoprocne rutila |
| Orden | Caprimulgiformes | Caprimulgiformes |
| Familia | Apodidae | Apodidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 23,0 cm (9.1 in) | 26,0 cm (10.2 in) |
| Peso | 9,700000000000001 g (0.34 oz) | 21,8 g (0.77 oz) |
| Dieta | Entirely airborne insectivore; feeds on minute flying insects and web-dispersing spiders over open habitats. | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … |
| Tamaño de la puesta | 1 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Mountain Swiftlet
High, thin twittering; 'tsit-tsit' over New Guinea highlands; echolocation clicks used in cave roosts; calls weakly in flight; colonial; flock calls produce soft chittering
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
Mountain Swiftlet
Found in montane New Guinea at 1,200–3,900 m. Resident in montane rainforest, moss forest, and subalpine grassland. Common in highlands.
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
Mountain Swiftlet
Chestnut-collared Swift
How to Tell Them Apart
Mountain Swiftlet
Small; dark blackish-grey upperparts; pale grey rump band; underparts pale greyish-white; forked tail; New Guinea montane endemic; similar to White-rumped Swiftlet but greyer overall and restricted to high-altitude zones.
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
Mountain Swiftlet
El vencejo de las montañas de Nueva Guinea habita en los bosques montanos de la isla de Nueva Guinea. Nidifica en cuevas y acantilados. Familia Apodidae.
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.