Least Nighthawk vs Archbold's Nightjar
Chordeiles pusillus 比較対象 Eurostopodus archboldi
Side-by-Side Comparison
| 属性 | Least Nighthawk | Archbold's Nightjar |
|---|---|---|
| 学名 | Chordeiles pusillus | Eurostopodus archboldi |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 25.0 cm (9.8 in) | 41.0 cm (16.1 in) |
| 体重 | 29.733333333333334 g (1.05 oz) | 77.0 g (2.72 oz) |
| 食性 | Catches small flying insects in aerial pursuit over South American scrub and open areas; crepuscular. | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. |
| 一腹卵数 | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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
Archbold's Nightjar
Rarely recorded; presumed churring nocturnal song; low, resonant trilling typical of genus; vocalizations scarcely documented from highland New Guinea
Geographic Range & Migration
Least Nighthawk
Resident of open savanna and cerrado in interior South America from Venezuela and the Guianas south to Bolivia and central Brazil.
Archbold's Nightjar
Resident of montane forest in central New Guinea (Snow Mountains and Star Mountains) above 1,500 m; very poorly known.
保全状況
Least Nighthawk
Archbold's Nightjar
How to Tell Them Apart
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 …
Archbold's Nightjar
Brown and dark grey with rufous-buff vermiculations; whitish throat patch; pale buff supercilium contrasts with darker crown; no white wing or tail patches; tail barred; New Guinea highlands; few records.
About These Birds
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。
Archbold's Nightjar
ニューギニアの亜高山帯に生息するヨタカで、探検家リチャード・アーチボルドにちなんで命名された。