Pallid Swift vs Glossy Swiftlet
Apus pallidus в сравнении с Collocalia esculenta
Side-by-Side Comparison
| Характеристика | Pallid Swift | Glossy Swiftlet |
|---|---|---|
| Научное название | Apus pallidus | Collocalia esculenta |
| Отряд | Caprimulgiformes | Caprimulgiformes |
| Семейство | Apodidae | Apodidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | — |
| Размах крыльев | 33,4 cm (13.1 in) | 19,9 cm (7.8 in) |
| Масса | 42,25 g (1.49 oz) | 8,66 g (0.31 oz) |
| Питание | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. | Feeds on aerial plankton including tiny flies and spiders; forages in large noisy flocks above … |
| Размер кладки | 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.
Glossy Swiftlet
Rapid, high-pitched twittering; thin 'tsit-tsit-tsit' in flight; echolocation clicks audible in cave roosts; very common; calls over forest and open areas; colonial and noisy
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.
Glossy Swiftlet
Found from India and Sri Lanka through Southeast Asia to New Guinea, Australia, and Pacific islands. One of the most widespread swiftlets.
Охранный статус
Pallid Swift
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 …
Glossy Swiftlet
Tiny; brilliant blue-green glossy upperparts; contrasting white rump patch; white underparts; deeply forked tail; widespread Indo-Pacific species and one of the most colourful swiftlets with a striking tricolour of gloss, …
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.
Glossy Swiftlet
A small swiftlet (9-10 cm) widespread from the Malay Peninsula through Indonesia to the Pacific islands. Glossy blue-black upperparts with whitish or grey underparts. Aerial insectivore, foraging in flocks over forest and open country. Colonial nester in caves and under rock overhangs.