Vaux's Swift vs White-collared Swift
Chaetura vauxi 비교 대상 Streptoprocne zonaris
Side-by-Side Comparison
| 속성 | Vaux's Swift | White-collared Swift |
|---|---|---|
| 학명 | Chaetura vauxi | Streptoprocne zonaris |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Apodidae | Apodidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 22.3 cm (8.8 in) | 42.5 cm (16.7 in) |
| 체중 | 18.033333333333335 g (0.64 oz) | 106.45 g (3.75 oz) |
| 식성 | Exclusively aerial insectivore catching small flying insects and spiders drifting in aerial plankton at altitude. | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| 산란 수 | 1-7 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Vaux's Swift
Soft, high sibilant whisper followed by ticking notes; delicate trill barely audible beyond immediate roosting vicinity.
White-collared Swift
Loud, screaming 'shreee-shreee'; powerful screeching trill; calls from large flocks over mountains; very audible; one of the loudest Neotropical swifts; alarm a harsh rattle
Geographic Range & Migration
Vaux's Swift
Breeds in western North America from Alaska south to Central America. Migrates to winter in Venezuela and northwestern South America.
White-collared Swift
Found from Mexico south through Central America to South America east of the Andes, reaching Bolivia and southern Brazil. Often in large flocks.
보전 상태
Vaux's Swift
White-collared Swift
How to Tell Them Apart
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 …
White-collared Swift
Large; glossy blue-black plumage with bold broad white collar encircling entire neck; collar clean and complete; underparts black; large slightly forked tail; among the most recognisable Neotropical swifts due to …
About These Birds
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.
White-collared Swift
A very large swift (20-22 cm, wingspan 45-55 cm) with a bold white collar band, the largest New World swift. Found from Mexico to southern Brazil and the Caribbean. Aerial insectivore, foraging in large, noisy flocks over forests and cities. Nests behind waterfalls and in caves.