Pennant-winged Nightjar vs Lesser Nighthawk
Caprimulgus vexillarius 对比 Chordeiles acutipennis
Side-by-Side Comparison
| 属性 | Pennant-winged Nightjar | Lesser Nighthawk |
|---|---|---|
| 学名 | Caprimulgus vexillarius | Chordeiles acutipennis |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 41.4 cm (16.3 in) | 33.0 cm (13.0 in) |
| 体重 | 189.70000000000002 g (6.69 oz) | 50.0 g (1.76 oz) |
| 食性 | Crepuscular forager targeting moths, termites, and large beetles; patrols forest edges and clearings at dusk. | Hawks small flying insects at dusk and dawn over North and South American arid scrub … |
| 产卵数 | 1-2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Pennant-winged Nightjar
Melodic whistled churring; cleaner, more musical than most African nightjars; male's display call a repeated mellow whistle; calls at dusk across miombo woodland
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
Pennant-winged Nightjar
Found across sub-Saharan Africa from Guinea east to Ethiopia and south to Angola. Resident in dry savanna, open woodland, and Sahel scrubland.
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
Pennant-winged Nightjar
Lesser Nighthawk
How to Tell Them Apart
Pennant-winged Nightjar
Large; dark brown and black upperparts with white wing-covert spots; large white primary patches visible in flight; breeding males grow extraordinary white pennant-shaped ninth primary extensions reaching 50 cm; females …
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
Pennant-winged Nightjar
旗状翎夜鹰，体长24–28厘米，分布于南非开阔林地，繁殖期雄鸟发育出长达60厘米的白色旗状羽，为长距离非洲内部迁徙鸟类。
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。