Lesser Nighthawk vs Jamaican Poorwill
Chordeiles acutipennis 比較対象 Siphonorhis americana
Side-by-Side Comparison
| 属性 | Lesser Nighthawk | Jamaican Poorwill |
|---|---|---|
| 学名 | Chordeiles acutipennis | Siphonorhis americana |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Not Evaluated |
| 体長 | — | — |
| 翼開長 | 33.0 cm (13.0 in) | 27.0 cm (10.6 in) |
| 体重 | 50.0 g (1.76 oz) | 55.4 g (1.95 oz) |
| 食性 | Hawks small flying insects at dusk and dawn over North and South American arid scrub … | Caught flying insects at night in Jamaican dry forest; presumed extinct since 19th century. |
| 一腹卵数 | 1-2 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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
Jamaican Poorwill
Possibly extinct; historically described as soft 'wheep-wheep'; whistled, purring call from dry limestone forest; no modern recordings exist
Geographic Range & Migration
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.
Jamaican Poorwill
Endemic to Jamaica; possibly extinct; known from historical specimens; no confirmed records since the 19th century.
保全状況
Lesser Nighthawk
Jamaican Poorwill
How to Tell Them Apart
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 …
Jamaican Poorwill
Brown and rufous mottled above with dark vermiculations; pale buff below with dark barring; white throat patch in male; buff and dark barred tail; no white wing patches. Closely resembles …
About These Birds
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。
Jamaican Poorwill
A medium Caprimulgidae poorwill (~55 g) endemic to Jamaica; possibly extinct or extremely rare. Last confirmed record in 1860; reported subsequently but never verified. Inhabited dry limestone scrub forest. Cryptic mottled plumage. Presumed nocturnal insectivore. Not currently evaluated by IUCN.