Lesser Nighthawk vs Common Nighthawk
Chordeiles acutipennis 对比 Chordeiles minor
Side-by-Side Comparison
| 属性 | Lesser Nighthawk | Common Nighthawk |
|---|---|---|
| 学名 | Chordeiles acutipennis | Chordeiles minor |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 33.0 cm (13.0 in) | 38.6 cm (15.2 in) |
| 体重 | 50.0 g (1.76 oz) | 71.75 g (2.53 oz) |
| 食性 | Hawks small flying insects at dusk and dawn over North and South American arid scrub … | Aerial insectivore; catches flying beetles, ants, moths, and flies in fast aerial pursuit over open … |
| 产卵数 | 1-2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
共同栖息地
无
Lesser Nighthawk only
Common Nighthawk only
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
Common Nighthawk
Loud, nasal 'peent' call repeated in flight; display dive produces loud booming 'whomp' with wings; churring trill on breeding grounds; colonial roost cacophony
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.
Common Nighthawk
Breeds across North America from Alaska to the Gulf Coast; long-distance migrant wintering in South America south to Argentina.
保护状况
Lesser Nighthawk
Common Nighthawk
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 …
Common Nighthawk
Brown and grey mottled above; white throat in male; white and dark barred underparts; distinctive white wing bar across primaries positioned more centrally than in Lesser Nighthawk; white tail band …
About These Birds
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。
Common Nighthawk
普通夜鹰(Chordeiles minor)是一种体重约72克的中型夜鹰科鸟类，广泛分布于北美洲，冬季迁徙至南美洲。以飞行中的昆虫为食。雄鸟发出特有的嗡嗡叫声和俯冲展示，翅膀上具白色横斑，是最广为人知的夜鹰之一。