Pallid Swift vs Vaux's Swift
Apus pallidus 비교 대상 Chaetura vauxi
Side-by-Side Comparison
| 속성 | Pallid Swift | Vaux's Swift |
|---|---|---|
| 학명 | Apus pallidus | Chaetura vauxi |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 33.4 cm (13.1 in) | 22.3 cm (8.8 in) |
| 체중 | 42.25 g (1.49 oz) | 18.033333333333335 g (0.64 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 | 1-7 |
| 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.
Vaux's Swift
Soft, high sibilant whisper followed by ticking notes; delicate trill barely audible beyond immediate roosting vicinity.
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.
Vaux's Swift
Breeds in western North America from Alaska south to Central America. Migrates to winter in Venezuela and northwestern South America.
보전 상태
Pallid Swift
Vaux's 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 …
Vaux's Swift
Small; dark sooty-brown upperparts; pale grey rump slightly paler than back; underparts pale greyish-brown; short spiny tail; smaller and paler-bellied than Chimney Swift; Pacific coast North American species with subtly …
About These Birds
Pallid Swift
창백한 칼새는 지중해와 중동, 아시아 중부에서 번식하고 아프리카에서 월동합니다. 연한 갈색 깃털과 목의 연한 색이 특징이며, 절벽과 건물에서 번식합니다.
Vaux's Swift
알래스카에서 중앙아메리카까지 북미 서부에 서식하는 소형 칼새 (11–12 cm). 어두운 갈-검은색 깃털에 더 연한 목. 공중 곤충 섭취; 계절 이동.