Pennant-winged Nightjar vs Lesser Nighthawk
Caprimulgus vexillarius 比較対象 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 |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 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 … |
| 一腹卵数 | 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.
保全状況
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
体長24〜28cmの南アフリカの開けた林地に生息するヨタカ。繁殖期の雄は最長60cmに及ぶ白い飾り羽根を持ち、アフリカ内で長距離渡りを行う。
Lesser Nighthawk
ヒメナイトホーク(Chordeiles acutipennis)は北アメリカ南西部からブラジルにかけて広く分布するナイトホークです。体長約20cmで、細長い翼と独特の飛行パターンが特徴です。薄明時に昆虫を捕食し、砂地や岩石地の地面に営巣します。