Large-tailed Nightjar vs Spotted Nightjar
Caprimulgus macrurus 比較対象 Eurostopodus argus
Side-by-Side Comparison
| 属性 | Large-tailed Nightjar | Spotted Nightjar |
|---|---|---|
| 学名 | Caprimulgus macrurus | Eurostopodus argus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 35.8 cm (14.1 in) | 42.7 cm (16.8 in) |
| 体重 | 69.16666666666667 g (2.44 oz) | 102.5 g (3.62 oz) |
| 食性 | Nocturnal feeder on flying insects including moths, beetles, and larger dipterans; hunts in low coursing … | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … |
| 一腹卵数 | 1-2 | 1 |
| Population Trend | — | — |
Habitat Comparison
共通生息地
Large-tailed Nightjar only
Spotted Nightjar only
None
Song & Call Comparison
Large-tailed Nightjar
Loud, resonant 'chuck-chuck-churr'; hollow knocking notes with long trill; one of Asia's commonest nightjars; calls persistently from forest edges; carries great distance
Spotted Nightjar
Loud churring 'good-lord-deliver-us' repeated at dusk; melodic bubbling quality; also emits hollow 'cow-cow-cow' series and soft frog-like croaking
Geographic Range & Migration
Large-tailed Nightjar
Found from India and Sri Lanka east to the Philippines and northern Australia. Resident in forest edge, secondary growth, and plantations.
Spotted Nightjar
Resident and partial migrant of open woodland, grassland, and scrub across mainland Australia and migrating to New Guinea and Indonesia in winter.
保全状況
Large-tailed Nightjar
Spotted Nightjar
How to Tell Them Apart
Large-tailed Nightjar
Intricately patterned brown, black, and buff upperparts; pale supercilium contrasts with dark crown; white throat patch; males show conspicuous white outer tail feathers and white primary spots; long tail distinctive.
Spotted Nightjar
Cryptically mottled grey-brown, rufous, and black with intricate vermiculations; distinctive large white spots on wing coverts; white throat patch; no white in wings or tail. Sexes similar with slight pattern …
About These Birds
Large-tailed Nightjar
体長25〜33cmの南・東南アジアからオーストラリアに生息するヨタカ。赤褐色の首輪とトク・トク・トクという鳴き声が特徴。
Spotted Nightjar
オーストラリア本土のスピニフェックス草原に生息するヨタカで、体重103g。