Nechisar Nightjar vs Lesser Nighthawk
Caprimulgus solala 比較対象 Chordeiles acutipennis
Side-by-Side Comparison
| 属性 | Nechisar Nightjar | Lesser Nighthawk |
|---|---|---|
| 学名 | Caprimulgus solala | Chordeiles acutipennis |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | — | — |
| 翼開長 | 37.0 cm (14.6 in) | 33.0 cm (13.0 in) |
| 体重 | 79.0 g (2.79 oz) | 50.0 g (1.76 oz) |
| 食性 | Nocturnal aerial insectivore; hawks moths and flying beetles over arid scrubland and rocky desert margins. | Hawks small flying insects at dusk and dawn over North and South American arid scrub … |
| 一腹卵数 | -- | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Nechisar Nightjar
Virtually unknown vocalizations; known only from a single wing feather; presumed churring song; critically rare Ethiopian endemic with essentially undescribed call
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
Nechisar Nightjar
Found across the Sahel from Senegal east to Ethiopia and south to Uganda and Kenya. Resident in open savanna and dry grassland.
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
Nechisar Nightjar
Lesser Nighthawk
How to Tell Them Apart
Nechisar Nightjar
Known from a single wing feather specimen; dark brownish-black with pale buff and tawny mottling; intricate fine vermiculations consistent with Caprimulgus pattern; extremely poorly known Ethiopian endemic.
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
Nechisar Nightjar
1990年にエチオピアのネキサル平野で採集された1標本と羽根のみが知られる絶滅危惧IA類のヨタカ。生態は不明。
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。