Lesser Nighthawk vs Least Nighthawk
Chordeiles acutipennis 对比 Chordeiles pusillus
Side-by-Side Comparison
| 属性 | Lesser Nighthawk | Least Nighthawk |
|---|---|---|
| 学名 | Chordeiles acutipennis | Chordeiles pusillus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 33.0 cm (13.0 in) | 25.0 cm (9.8 in) |
| 体重 | 50.0 g (1.76 oz) | 29.733333333333334 g (1.05 oz) |
| 食性 | Hawks small flying insects at dusk and dawn over North and South American arid scrub … | Catches small flying insects in aerial pursuit over South American scrub and open areas; crepuscular. |
| 产卵数 | 1-2 | 1 |
| Population Trend | — | — |
Habitat Comparison
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
Least Nighthawk
High-pitched, buzzy trill; thin 'pee-pee-pee' series; soft churring from ground; tiny size matched by high, reedy call quality; rarely loud
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.
Least Nighthawk
Resident of open savanna and cerrado in interior South America from Venezuela and the Guianas south to Bolivia and central Brazil.
保护状况
Lesser Nighthawk
Least Nighthawk
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 …
Least Nighthawk
Smallest Chordeiles; brown and buff mottled above; pale buff underparts with dark barring; small white throat patch in male; narrow white wing bar; white or buff tail spots. Female has …
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。
Least Nighthawk
侏夜鹰(Chordeiles pusillus)是体型最小的夜鹰属鸟类，体重约30克，属夜鹰科，栖息于巴西东部、玻利维亚北部和委内瑞拉的开阔塞拉多草原、卡廷加灌木丛和干旱林地。体色斑驳棕褐色，以飞行中的昆虫为食。