Pallid Swift vs Sooty Swift
Apus pallidus เปรียบเทียบกับ Cypseloides fumigatus
Side-by-Side Comparison
| คุณสมบัติ | Pallid Swift | Sooty Swift |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Apus pallidus | Cypseloides fumigatus |
| อันดับ | Caprimulgiformes | Caprimulgiformes |
| วงศ์ตระกูล | Apodidae | Apodidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | — |
| กว้างปีก | 33.4 cm (13.1 in) | 29.0 cm (11.4 in) |
| น้ำหนัก | 42.25 g (1.49 oz) | 41.666666666666664 g (1.47 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 | 1 |
| Population Trend | — | — |
Habitat Comparison
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Pallid Swift only
Song & Call Comparison
Pallid Swift
Melodic, rolling trill with rich timbre; sustained musical phrase with slight variations on repeated delivery at dusk.
Sooty Swift
Soft twittering 'tsit-tsit'; thin, buzzy notes in flight; calls over Neotropical waterfalls and gorges; quiet, raspy trill; rarely as vocal as larger swift species
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.
Sooty Swift
Found in the Guiana Shield and Amazon Basin in Brazil, Venezuela, and the Guianas. Nomadic; associated with rocky outcrops and waterfalls.
สถานะการอนุรักษ์
Pallid Swift
Sooty 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 …
Sooty Swift
Uniformly dark sooty-brown plumage throughout; no contrasting pale markings anywhere; slightly paler brownish-grey on throat; large and uniform; South American species whose entirely dark coloration recalls blackish swiftlets but much …
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.
Sooty Swift
A medium-sized swift (15-17 cm) found in subtropical and montane forests of southeastern Brazil, Paraguay, and Argentina. Sooty-brown plumage. Aerial insectivore, foraging over forested gorges and waterfalls. Nests behind waterfalls on wet rock faces.