Pallid Swift vs Satin Swiftlet
Apus pallidus so với Collocalia uropygialis
Side-by-Side Comparison
| Thuộc Tính | Pallid Swift | Satin Swiftlet |
|---|---|---|
| Tên Khoa Học | Apus pallidus | Collocalia uropygialis |
| Bộ | Caprimulgiformes | Caprimulgiformes |
| Họ | Apodidae | Apodidae |
| Tình Trạng Bảo Tồn | Least Concern | Not Evaluated |
| Chiều Dài | — | — |
| Chiều Dài Sải Cánh | 33,4 cm (13.1 in) | — |
| Khối Lượng | 42,25 g (1.49 oz) | 5,4 g (0.19 oz) |
| Chế Độ Ăn | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. | Aerial insectivore catching tiny flying insects, midges, and airborne spiders in fast low-altitude flight near … |
| Số Trứng | 1-4 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Pallid Swift
Melodic, rolling trill with rich timbre; sustained musical phrase with slight variations on repeated delivery at dusk.
Satin Swiftlet
Very thin, high twittering; rapid 'chip' notes over Bismarck Archipelago islands; echolocation clicks inside cave roosts; tiny; call barely distinguishable from other small swiftlets
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.
Satin Swiftlet
Found in the Moluccas and southwestern Pacific including New Guinea and Solomon Islands. Resident in lowland forest, forest edge, and open areas.
Tình Trạng Bảo Tồn
Pallid Swift
Satin 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 …
Satin Swiftlet
Tiny; blackish upperparts with satiny blue-green gloss; white rump band; underparts dark sooty-grey; forked tail; Oceanian swiftlet with satin-like sheen on upperparts distinguishing it from duller relatives in the region.
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.
Satin Swiftlet
A small swiftlet (9-10 cm) found in the Bismarck Archipelago and Solomon Islands. Dark upperparts with a satiny sheen and pale underparts. Aerial insectivore. Colonial cave nester. Recently split from Glossy Swiftlet based on genetic and vocal differences.