Spotted Nightjar vs Greater Band-winged Nightjar
Eurostopodus argus 比較対象 Systellura longirostris
Side-by-Side Comparison
| 属性 | Spotted Nightjar | Greater Band-winged Nightjar |
|---|---|---|
| 学名 | Eurostopodus argus | Systellura longirostris |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 42.7 cm (16.8 in) | 31.0 cm (12.2 in) |
| 体重 | 102.5 g (3.62 oz) | 45.666666666666664 g (1.61 oz) |
| 食性 | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … | Aerial insectivore; catches moths and flying insects at night over South American open and scrubby … |
| 一腹卵数 | 1 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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
Greater Band-winged Nightjar
Repeated 'tyuk-tyuk' or 'chuck-will'; whistled, melodic phrase; calls from Andean slopes and scrub; alarm a sharp bark; cleaner tone than lowland nightjars
Geographic Range & Migration
Spotted Nightjar
Resident and partial migrant of open woodland, grassland, and scrub across mainland Australia and migrating to New Guinea and Indonesia in winter.
Greater Band-winged Nightjar
Resident of open rocky slopes and Andean scrub from Ecuador south through Peru, Bolivia, Chile, and Argentina to Patagonia and the Falkland Islands.
保全状況
Spotted Nightjar
Greater Band-winged Nightjar
How to Tell Them Apart
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 …
Greater Band-winged Nightjar
Brown and grey mottled with dark brown and buff vermiculations; white wing bar across primaries forming band pattern in flight; white throat in male; buff throat in female; white outer …
About These Birds
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。
Greater Band-winged Nightjar
A small Caprimulgidae nightjar (~46 g) of open scrub, grassland, and rocky slopes from Argentina northward through the Andes to Colombia. Brown-and-buff cryptic plumage with a pale wing bar. Highly vocal at night in Andean valleys. Feeds on insects aerially. Least Concern across its wide South American range.