Pallid Swift vs Plain Swift
Apus pallidus 비교 대상 Apus unicolor
Side-by-Side Comparison
| 속성 | Pallid Swift | Plain Swift |
|---|---|---|
| 학명 | Apus pallidus | Apus unicolor |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 33.4 cm (13.1 in) | 29.9 cm (11.8 in) |
| 체중 | 42.25 g (1.49 oz) | 24.2 g (0.85 oz) |
| 식성 | Aerial insectivore foraging continuously in flight, taking tiny flies, beetles, and ballooning spiders. | Exclusively aerial insectivore catching small flying insects and spiders drifting in aerial plankton at altitude. |
| 산란 수 | 1-4 | 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.
Plain Swift
Harsh, grating scream with descending inflection; loud raspy calls carrying urgency, often given during colony disturbance.
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.
Plain Swift
Breeds on the Azores, Madeira, and Canary Islands. Resident on these Macaronesian archipelagos. Closely related to Common Swift.
보전 상태
Pallid Swift
Plain 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 …
Plain Swift
Dark sooty-brown plumage; very faint pale chin; no distinct throat patch; entirely plain and uniform; smaller than Common Swift; Macaronesian endemic breeding in Canary Islands and Madeira; coloration slightly paler …
About These Birds
Pallid Swift
창백한 칼새는 지중해와 중동, 아시아 중부에서 번식하고 아프리카에서 월동합니다. 연한 갈색 깃털과 목의 연한 색이 특징이며, 절벽과 건물에서 번식합니다.
Plain Swift
단색 칼새는 카나리아 제도, 마데이라, 아조레스에 서식하는 칼새입니다. 이름과 같이 전체적으로 단조로운 검은 갈색 깃털을 가지고 있으며, 절벽과 건물에서 집을 짓습니다.