Palau Nightjar vs Lesser Nighthawk
Caprimulgus phalaena 对比 Chordeiles acutipennis
Side-by-Side Comparison
| 属性 | Palau Nightjar | Lesser Nighthawk |
|---|---|---|
| 学名 | Caprimulgus phalaena | Chordeiles acutipennis |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 32.3 cm (12.7 in) | 33.0 cm (13.0 in) |
| 体重 | 91.5 g (3.23 oz) | 50.0 g (1.76 oz) |
| 食性 | Catches flying insects in nocturnal aerial sallies over Palau island forest and scrub. | 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
Palau Nightjar
Churring call from Palau forest; repetitive hollow trill; endemic island species with poorly documented vocalizations; calls at night from dense vegetation
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
Palau Nightjar
Endemic to Palau (Micronesia, western Pacific Ocean); resident of forest and open woodland on the main Palauan islands.
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
Palau Nightjar
Lesser Nighthawk
How to Tell Them Apart
Palau Nightjar
Brown and rufous mottled above with dark vermiculations; pale buff throat patch; small pale wing spots; tail barred brown and buff without bold white markings; Palau endemic; relatively large and …
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
Palau Nightjar
帕劳夜鹰，约92克，帕劳群岛（西太平洋）特有种，褐色和淡黄色隐蔽花纹。
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。