Bonaparte's Nightjar vs Lesser Nighthawk
Caprimulgus concretus 对比 Chordeiles acutipennis
Side-by-Side Comparison
| 属性 | Bonaparte's Nightjar | Lesser Nighthawk |
|---|---|---|
| 学名 | Caprimulgus concretus | Chordeiles acutipennis |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Vulnerable | Least Concern |
| 体长 | — | — |
| 翼展 | 32.8 cm (12.9 in) | 33.0 cm (13.0 in) |
| 体重 | 57.5 g (2.03 oz) | 50.0 g (1.76 oz) |
| 食性 | Crepuscular and nocturnal insectivore; catches moths, beetles, and large flying insects on the wing in … | Hawks small flying insects at dusk and dawn over North and South American arid scrub … |
| 产卵数 | 1 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Bonaparte's Nightjar
Churring call from Borneo lowland forest; repetitive hollow trill; rarely recorded; calls at night from dense humid forest; alarm a sharp bark note
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
Bonaparte's Nightjar
Found in highland Borneo and Sumatra in montane forest at 1,000–2,500 m. Endemic to the Sundaic region; infrequently recorded.
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
Bonaparte's Nightjar
Lesser Nighthawk
How to Tell Them Apart
Bonaparte's Nightjar
Rich dark brown upperparts with black-centred feathers and buff-chestnut edging; white throat patch; densely barred underparts; males have white outer tail feathers; Bornean endemic with notably deep brown tones.
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
Bonaparte's Nightjar
波拿巴夜鹰，体长20–22厘米，分布于婆罗洲和苏门答腊泥炭沼泽森林，近危（因森林砍伐）。
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。