Indian Swiftlet vs Pallid Swift
Aerodramus unicolor 비교 대상 Apus pallidus
Side-by-Side Comparison
| 속성 | Indian Swiftlet | Pallid Swift |
|---|---|---|
| 학명 | Aerodramus unicolor | Apus pallidus |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 22.7 cm (8.9 in) | 33.4 cm (13.1 in) |
| 체중 | 11.0 g (0.39 oz) | 42.25 g (1.49 oz) |
| 식성 | Tiny aerial insectivore taking small flying insects and spiders; congregates where insects emerge over water. | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. |
| 산란 수 | 2 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Indian Swiftlet
Rapid, thin twittering; 'tsit-tsit' calls over South Indian hills; audible echolocation clicks in cave roosts; colonial; calls softly in flight; noisy at roost entrances
Pallid Swift
Melodic, rolling trill with rich timbre; sustained musical phrase with slight variations on repeated delivery at dusk.
Geographic Range & Migration
Indian Swiftlet
Found in Sri Lanka and southwestern India. Resident in hills and lowlands, nesting in rock crevices on cliff faces up to 2,000 m elevation.
Pallid Swift
Breeds in the Mediterranean and North Africa east to Pakistan. Migratory; winters in sub-Saharan Africa from Senegal to Ethiopia.
보전 상태
Indian Swiftlet
Pallid Swift
How to Tell Them Apart
Indian Swiftlet
Small; uniformly dark blackish-brown throughout with minimal gloss; rump barely paler than back or concolorous; underparts dark grey-brown; forked tail; South Indian and Sri Lankan endemic with exceptionally uniform dark …
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 …
About These Birds
Indian Swiftlet
인도 아대륙과 스리랑카 전역에 분포하는 작은 칼새류(11~12cm). 짙은 회갈색 깃털에 연한 허리가 있다. 공중 식충성이다.
Pallid Swift
창백한 칼새는 지중해와 중동, 아시아 중부에서 번식하고 아프리카에서 월동합니다. 연한 갈색 깃털과 목의 연한 색이 특징이며, 절벽과 건물에서 번식합니다.