Lesser Nighthawk vs Solomons Nightjar
Chordeiles acutipennis 比較対象 Eurostopodus nigripennis
Side-by-Side Comparison
| 属性 | Lesser Nighthawk | Solomons Nightjar |
|---|---|---|
| 学名 | Chordeiles acutipennis | Eurostopodus nigripennis |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Vulnerable |
| 体長 | — | — |
| 翼開長 | 33.0 cm (13.0 in) | 43.2 cm (17.0 in) |
| 体重 | 50.0 g (1.76 oz) | 137.5 g (4.85 oz) |
| 食性 | Hawks small flying insects at dusk and dawn over North and South American arid scrub … | Aerial insectivore; hawks moths and other large insects at night over Solomon Islands forest and … |
| 一腹卵数 | 1-2 | 1 |
| 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
Solomons Nightjar
Deep, resonant churring call at dusk; slow repetitive notes with hollow, frog-like quality; poorly known vocalizations; rarely recorded in wild
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.
Solomons Nightjar
Endemic to the Solomon Islands; resident of lowland forest, secondary growth, and forest edge on Guadalcanal and adjacent islands.
保全状況
Lesser Nighthawk
Solomons Nightjar
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 …
Solomons Nightjar
Dark brown and blackish with buff mottling; rufous-buff supercilium; white throat patch; darker overall than most Eurostopodus nightjars; restricted to Solomon Islands; no white wing or tail patches.
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。
Solomons Nightjar
ブーゲンビル島とソロモン諸島に生息するヨタカで、危急種に指定されている。