Nechisar Nightjar vs Lesser Nighthawk
Caprimulgus solala 对比 Chordeiles acutipennis
Side-by-Side Comparison
| 属性 | Nechisar Nightjar | Lesser Nighthawk |
|---|---|---|
| 学名 | Caprimulgus solala | Chordeiles acutipennis |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Vulnerable | Least Concern |
| 体长 | — | — |
| 翼展 | 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 … |
| 产卵数 | -- | 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.
保护状况
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
内奇萨尔夜鹰，极危，1990年在埃塞俄比亚内奇萨尔平原仅采集单一标本和羽毛样本，生态习性不明。
Lesser Nighthawk
小夜鹰(Chordeiles acutipennis)是一种体重约50克的夜鹰科鸟类，栖息于从美国西南部和墨西哥到哥斯达黎加的荒漠、半干旱灌木丛和开阔林地，冬季迁徙至南美洲。在地面营巢，体色斑驳褐色，具出色的隐蔽性，以昆虫为食。