Eastern Whip-poor-will vs Lesser Nighthawk
Antrostomus vociferus 比較対象 Chordeiles acutipennis
Side-by-Side Comparison
| 属性 | Eastern Whip-poor-will | Lesser Nighthawk |
|---|---|---|
| 学名 | Antrostomus vociferus | Chordeiles acutipennis |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Near Threatened | Least Concern |
| 体長 | — | — |
| 翼開長 | 30.9 cm (12.2 in) | 33.0 cm (13.0 in) |
| 体重 | 53.099999999999994 g (1.87 oz) | 50.0 g (1.76 oz) |
| 食性 | Aerial insectivore; catches large moths and flying insects at night over North American forest and … | Hawks small flying insects at dusk and dawn over North and South American arid scrub … |
| 一腹卵数 | 1-2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Eastern Whip-poor-will
Loud, clear 'whip-POOR-WILL' repeated hundreds of times; emphatic burry whistle; iconic nocturnal forest sound of eastern North America; male calls incessantly at dusk
Lesser Nighthawk
Loud purring trill; buzzy 'brrrrr' given in flight; lower and softer than Common Nighthawk; males display with booming wingbeats; calls at dusk over deserts
Geographic Range & Migration
Eastern Whip-poor-will
Breeds in open woodland and forest edge in eastern North America from southern Canada to the Gulf Coast; winters in Central America and Mexico.
Lesser Nighthawk
Breeds in open arid scrub from southwestern USA south through Central America to western South America; winters in Mexico and northern South America.
保全状況
Eastern Whip-poor-will
Lesser Nighthawk
How to Tell Them Apart
Eastern Whip-poor-will
Grey-brown and buff mottled above with dark vermiculations; white gorget in male; pale buff barred underparts; white tips on outer tail feathers in male; female with buff gorget and buff …
Lesser Nighthawk
Brown and buff mottled above; buff-white below with brown barring; white throat in male; white wing bar closer to wingtip than in Common Nighthawk; buff tail band. Female with buff …
About These Birds
Eastern Whip-poor-will
A medium Caprimulgidae nightjar (~53 g) of dry open forest in eastern North America, famous for its insistent 'whip-poor-will' call repeated hundreds of times. Mottled grey-brown plumage. Winters in Central America. Feeds on moths and beetles in aerial pursuit. Near Threatened from insect declines and forest fragmentation.
Lesser Nighthawk
ヒメナイトホーク(Chordeiles acutipennis)は北アメリカ南西部からブラジルにかけて広く分布するナイトホークです。体長約20cmで、細長い翼と独特の飛行パターンが特徴です。薄明時に昆虫を捕食し、砂地や岩石地の地面に営巣します。