Donaldson Smith's Nightjar vs Lesser Nighthawk
Caprimulgus donaldsoni 对比 Chordeiles acutipennis
Side-by-Side Comparison
| 属性 | Donaldson Smith's Nightjar | Lesser Nighthawk |
|---|---|---|
| 学名 | Caprimulgus donaldsoni | Chordeiles acutipennis |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 26.0 cm (10.2 in) | 33.0 cm (13.0 in) |
| 体重 | 29.75 g (1.05 oz) | 50.0 g (1.76 oz) |
| 食性 | Nocturnal insect hawker feeding on moths, beetles, and flying crickets; hunts in buoyant coursing flight. | Hawks small flying insects at dusk and dawn over North and South American arid scrub … |
| 产卵数 | 2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Donaldson Smith's Nightjar
Soft, rapid churring; thin 'trrrr' at moderate pitch; small size produces lighter call; calls from dry African scrub at night; poorly known vocalizations
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
Donaldson Smith's Nightjar
Found across sub-Saharan Africa from Gabon south to South Africa. Common in woodland, forest edge, and gardens. Produces distinctive churring calls.
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
Donaldson Smith's Nightjar
Lesser Nighthawk
How to Tell Them Apart
Donaldson Smith's Nightjar
Small and compact; pale greyish-brown upperparts finely vermiculated blackish; narrow whitish supercilium; small white throat spot; underparts pale buff with faint barring; notably small size compared to African relatives.
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
Donaldson Smith's Nightjar
唐纳森-史密斯夜鹰，体长20–22厘米，分布于非洲之角、索马里、埃塞俄比亚和肯尼亚，栖息于干旱灌丛。
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。