Common Nighthawk vs Spotted Nightjar
Chordeiles minor 对比 Eurostopodus argus
Side-by-Side Comparison
| 属性 | Common Nighthawk | Spotted Nightjar |
|---|---|---|
| 学名 | Chordeiles minor | Eurostopodus argus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 38.6 cm (15.2 in) | 42.7 cm (16.8 in) |
| 体重 | 71.75 g (2.53 oz) | 102.5 g (3.62 oz) |
| 食性 | Aerial insectivore; catches flying beetles, ants, moths, and flies in fast aerial pursuit over open … | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … |
| 产卵数 | 1-2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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
Spotted Nightjar
Loud churring 'good-lord-deliver-us' repeated at dusk; melodic bubbling quality; also emits hollow 'cow-cow-cow' series and soft frog-like croaking
Geographic Range & Migration
Common Nighthawk
Breeds across North America from Alaska to the Gulf Coast; long-distance migrant wintering in South America south to Argentina.
Spotted Nightjar
Resident and partial migrant of open woodland, grassland, and scrub across mainland Australia and migrating to New Guinea and Indonesia in winter.
保护状况
Common Nighthawk
Spotted Nightjar
How to Tell Them Apart
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 …
Spotted Nightjar
Cryptically mottled grey-brown, rufous, and black with intricate vermiculations; distinctive large white spots on wing coverts; white throat patch; no white in wings or tail. Sexes similar with slight pattern …
About These Birds
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。
Spotted Nightjar
中型夜鹰（约103克）。栖息于澳大利亚大陆的开阔林地和纺锤草草地。无危。