Mountain Swiftlet vs Pallid Swift
Aerodramus hirundinaceus comparado con Apus pallidus
Side-by-Side Comparison
| Atributo | Mountain Swiftlet | Pallid Swift |
|---|---|---|
| Nombre científico | Aerodramus hirundinaceus | Apus pallidus |
| Orden | Caprimulgiformes | Caprimulgiformes |
| Familia | Apodidae | Apodidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 23,0 cm (9.1 in) | 33,4 cm (13.1 in) |
| Peso | 9,700000000000001 g (0.34 oz) | 42,25 g (1.49 oz) |
| Dieta | Entirely airborne insectivore; feeds on minute flying insects and web-dispersing spiders over open habitats. | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. |
| Tamaño de la puesta | 1 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Ninguno
Mountain Swiftlet only
Pallid Swift only
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
Pallid Swift
Melodic, rolling trill with rich timbre; sustained musical phrase with slight variations on repeated delivery at dusk.
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.
Pallid Swift
Breeds in the Mediterranean and North Africa east to Pakistan. Migratory; winters in sub-Saharan Africa from Senegal to Ethiopia.
Estado de conservación
Mountain Swiftlet
Pallid 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.
Pallid Swift
Medium-large; pale brownish-grey overall, distinctly paler than Common Swift; larger pale throat patch; wing coverts show pale scaly edges; Mediterranean and Middle Eastern species; pale sandy-brown tone separates it from …
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.
Pallid Swift
A medium-sized swift (16-17 cm) similar to Common Swift but paler, sandy-brown overall with a larger white throat patch. Found across southern Europe, North Africa, and the Middle East. Aerial insectivore. Long-distance migrant wintering in sub-Saharan Africa and South Asia.