Chimney Swift vs White-collared Swift
Chaetura pelagica 比較対象 Streptoprocne zonaris
Side-by-Side Comparison
| 属性 | Chimney Swift | White-collared Swift |
|---|---|---|
| 学名 | Chaetura pelagica | Streptoprocne zonaris |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | — | — |
| 翼開長 | 24.9 cm (9.8 in) | 42.5 cm (16.7 in) |
| 体重 | 22.666666666666668 g (0.80 oz) | 106.45 g (3.75 oz) |
| 食性 | Aerial forager on tiny insects and wind-dispersed spiders; forages near water surfaces where insects concentrate. | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| 一腹卵数 | 2-7 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Chimney Swift
Rapid, liquid twittering with bright cheerful quality; chi-chi-chi staccato notes carrying well across open sky at dusk.
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
Chimney Swift
Breeds in eastern North America from Canada south to Texas. Long-distance migrant wintering in the upper Amazon basin of Peru and Brazil.
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.
保全状況
Chimney Swift
White-collared Swift
How to Tell Them Apart
Chimney Swift
Small; uniformly dark sooty-grey overall with slightly paler grey throat and chin; no contrasting rump patch; short spiny tail; sexes identical; North American chimney-nesting species famous for its swirling pre-roost …
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
Chimney Swift
北米東部で繁殖し、南米北部で越冬する小型の鳥（体長12〜15cm）。細長い体と鎌型の翼が特徴で、食事・交尾・巣材集め以外はほぼ常に空中を飛び続ける。Chaetura pelagica（アマツバメ）は都市の煙突や中空の木を集団で営巣場所として利用する。「空飛ぶ葉巻」の愛称がある。Apodidae科。
White-collared Swift
ホワイトカラードスウィフトはラテンアメリカ全域の山岳地帯に広く分布し、白い首輪が特徴的な大型のアマツバメである。