Pallid Swift vs Western Glossy Swiftlet
Apus pallidus comparado con Collocalia affinis
Side-by-Side Comparison
| Atributo | Pallid Swift | Western Glossy Swiftlet |
|---|---|---|
| Nombre científico | Apus pallidus | Collocalia affinis |
| Orden | Caprimulgiformes | Caprimulgiformes |
| Familia | Apodidae | Apodidae |
| Estado de conservación | Least Concern | Not Evaluated |
| Longitud | — | — |
| Envergadura | 33,4 cm (13.1 in) | — |
| Peso | 42,25 g (1.49 oz) | 8,65 g (0.31 oz) |
| Dieta | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. | Aerial insectivore consuming minute dipterans, midges, and ballooning spiders caught in continuous fast flight. |
| Tamaño de la puesta | 1-4 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
Ninguno
Pallid Swift only
Western Glossy Swiftlet only
Song & Call Comparison
Pallid Swift
Melodic, rolling trill with rich timbre; sustained musical phrase with slight variations on repeated delivery at dusk.
Western Glossy Swiftlet
High, thin 'tsit-tsit'; rapid chittering in flight; echolocation clicks used inside caves; tiny size produces very high-pitched thin calls; soft twittering over forest
Geographic Range & Migration
Pallid Swift
Breeds in the Mediterranean and North Africa east to Pakistan. Migratory; winters in sub-Saharan Africa from Senegal to Ethiopia.
Western Glossy Swiftlet
Found from the Andaman Islands and northeastern India through Southeast Asia to Borneo and the Philippines. Resident in diverse forest habitats.
Estado de conservación
Pallid Swift
Western Glossy Swiftlet
How to Tell Them Apart
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 …
Western Glossy Swiftlet
Tiny; glossy blue-black upperparts with green iridescence; underparts dark sooty-grey; white-buff rump band; deeply forked tail; recently split taxon similar to Philippine Glossy Swiftlet but with subtly different rump and …
About These Birds
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.
Western Glossy Swiftlet
A small swiftlet (9-10 cm) found in lowland and hill forests of the Malay Peninsula, Sumatra, and Borneo. Glossy blue-black upperparts with a paler rump. Aerial insectivore, feeding on tiny flying insects. Colonial nester in caves and buildings.