Lesser Nighthawk vs Least Nighthawk
Chordeiles acutipennis 比較対象 Chordeiles pusillus
Side-by-Side Comparison
| 属性 | Lesser Nighthawk | Least Nighthawk |
|---|---|---|
| 学名 | Chordeiles acutipennis | Chordeiles pusillus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 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. |
| 一腹卵数 | 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.
保全状況
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
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。
Least Nighthawk
リーストナイトホーク(Chordeiles pusillus)は南アメリカ内陸部に生息する小型のナイトホークです。ブラジル中部からアルゼンチン北部にかけて分布します。体長約16cmで、岩石地や砂地の開けた生息地を好みます。夕暮れ時に昆虫を捕食します。