Costa Rican Swift vs White-collared Swift
Chaetura fumosa 比較対象 Streptoprocne zonaris
Side-by-Side Comparison
| 属性 | Costa Rican Swift | White-collared Swift |
|---|---|---|
| 学名 | Chaetura fumosa | Streptoprocne zonaris |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Apodidae | Apodidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 21.2 cm (8.3 in) | 42.5 cm (16.7 in) |
| 体重 | 18.2 g (0.64 oz) | 106.45 g (3.75 oz) |
| 食性 | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … | Obligate aerial insectivore; gathers small flying insects, winged ants, and airborne spiders during flight. |
| 一腹卵数 | -- | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Costa Rican Swift
Thin, insect-like buzz alternating with soft clicks; delicate high trill delivered during swift wheeling flight over valleys.
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
Costa Rican Swift
Found along the Pacific slope of Costa Rica and Panama. Resident in lowland and foothill forest and forest edge below 1,000 m.
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
Costa Rican Swift
White-collared Swift
How to Tell Them Apart
Costa Rican Swift
Small; uniformly dark sooty-brown with rump barely paler than dark back; underparts dark grey-brown; short spiny tail; Central American Pacific slope species; exceptionally dark and uniform compared to most Chaetura …
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
Costa Rican Swift
コスタリカ太平洋斜面とパナマ西部固有の小型アマツバメ（11 cm）。淡い灰色の腰帯を持つ暗い羽衣。棘状の尾。湿潤林の林冠上を飛翔する空中昆虫食性。詳細不明。
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。