Indian Nightjar vs Lesser Nighthawk
Caprimulgus asiaticus 比較対象 Chordeiles acutipennis
Side-by-Side Comparison
| 属性 | Indian Nightjar | Lesser Nighthawk |
|---|---|---|
| 学名 | Caprimulgus asiaticus | Chordeiles acutipennis |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 29.5 cm (11.6 in) | 33.0 cm (13.0 in) |
| 体重 | 43.0 g (1.52 oz) | 50.0 g (1.76 oz) |
| 食性 | Nocturnal forager on flying insects; specialises in large moths and beetles in slow aerial passes … | Hawks small flying insects at dusk and dawn over North and South American arid scrub … |
| 一腹卵数 | 2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Indian Nightjar
Loud 'chuck-chuck-chuck-r'; rapid hollow knocking notes accelerating into a trill; carries far across South Asian scrub; distinctive rhythm; very persistent at night
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
Indian Nightjar
Endemic to Madagascar and the Comoro Islands. Resident in forest edge, savanna, and open scrub across the island including arid southern regions.
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
Indian Nightjar
Lesser Nighthawk
How to Tell Them Apart
Indian Nightjar
Greyish-brown upperparts with black-centred feathers and buff freckling; white throat patch; pale supercilium; males show white primary spots and outer tail corners; underparts barred buff-brown; widespread South Asian species.
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
Indian Nightjar
体長21〜24cmのインド亜大陸・東南アジアに生息するヨタカ。白い喉斑とチャックチャックチャックの鳴き声が特徴。
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。