Lesser Nighthawk vs Swallow-tailed Nightjar
Chordeiles acutipennis 对比 Uropsalis segmentata
Side-by-Side Comparison
| 属性 | Lesser Nighthawk | Swallow-tailed Nightjar |
|---|---|---|
| 学名 | Chordeiles acutipennis | Uropsalis segmentata |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 33.0 cm (13.0 in) | 32.6 cm (12.8 in) |
| 体重 | 50.0 g (1.76 oz) | 42.25000000000001 g (1.49 oz) |
| 食性 | Hawks small flying insects at dusk and dawn over North and South American arid scrub … | Nocturnal aerial insectivore; catches moths and beetles over Andean montane forest and scrub. |
| 产卵数 | 1-2 | 1 |
| Population Trend | — | — |
Habitat Comparison
共同栖息地
无
Lesser Nighthawk only
Swallow-tailed Nightjar 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
Swallow-tailed Nightjar
High, thin churring whistle; reedy 'tsee-tsee' series; calls from Andean forest understory; males conspicuous in display flight; female call softer and shorter
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.
Swallow-tailed Nightjar
Resident of Andean forest edge and open slopes from Colombia and Venezuela south through Ecuador and Peru to Bolivia, at 1,500–3,500 m.
保护状况
Lesser Nighthawk
Swallow-tailed 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 …
Swallow-tailed Nightjar
Male dark brown with buff and rufous mottling; extraordinarily forked tail with outer feathers extending to 18 cm beyond inner; white throat patch. Female brown and buff mottled without elongated …
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。
Swallow-tailed Nightjar
A small Caprimulgidae nightjar (~42 g) of Andean montane forest edges and paramo from Colombia to Bolivia. Males possess a deeply forked swallow-like tail exceeding body length. Inhabits forest clearings and shrubby paramo. Feeds on moths and beetles at dusk. Least Concern in its montane Andean habitat.