Pallid Swift vs Great Swallow-tailed Swift
Apus pallidus เปรียบเทียบกับ Panyptila sanctihieronymi
Side-by-Side Comparison
| คุณสมบัติ | Pallid Swift | Great Swallow-tailed Swift |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Apus pallidus | Panyptila sanctihieronymi |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Apodidae | Apodidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 33.4 cm (13.1 in) | 36.8 cm (14.5 in) |
| น้ำหนัก | 42.25 g (1.49 oz) | 48.416666666666664 g (1.71 oz) |
| อาหาร | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. | Catches aerial plankton — tiny midges, gnats, and ballooning spiders — continuously during soaring flight. |
| จำนวนไข่ | 1-4 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
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Pallid Swift only
Great Swallow-tailed Swift only
Song & Call Comparison
Pallid Swift
Melodic, rolling trill with rich timbre; sustained musical phrase with slight variations on repeated delivery at dusk.
Great Swallow-tailed Swift
Soft, rippling trill with liquid overtones; easy flowing sequence of mellow notes carrying pleasantly across open sky.
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.
Great Swallow-tailed Swift
Found from southern Mexico through Guatemala, Honduras, to Costa Rica. Resident in humid highland forest at 600–2,000 m elevation.
สถานะการอนุรักษ์
Pallid Swift
Great Swallow-tailed Swift
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 …
Great Swallow-tailed Swift
Black upperparts with white throat and white flanks; bold white rump patch; extremely long deeply forked tail with white outer feather edges; Central American species with the most spectacular forked …
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.
Great Swallow-tailed Swift
A large swift (18-20 cm) with an extremely long, deeply forked tail. Dark plumage with a white throat and collar. Found in highland forests from southern Mexico to Honduras. Aerial insectivore, foraging over mountain canyons and pine-oak forests. Uncommon and rarely observed.