Spotted Nightjar vs Jamaican Poorwill
Eurostopodus argus 对比 Siphonorhis americana
Side-by-Side Comparison
| 属性 | Spotted Nightjar | Jamaican Poorwill |
|---|---|---|
| 学名 | Eurostopodus argus | Siphonorhis americana |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Not Evaluated |
| 体长 | — | — |
| 翼展 | 42.7 cm (16.8 in) | 27.0 cm (10.6 in) |
| 体重 | 102.5 g (3.62 oz) | 55.4 g (1.95 oz) |
| 食性 | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … | Caught flying insects at night in Jamaican dry forest; presumed extinct since 19th century. |
| 产卵数 | 1 | -- |
| 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
Jamaican Poorwill
Possibly extinct; historically described as soft 'wheep-wheep'; whistled, purring call from dry limestone forest; no modern recordings exist
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.
Jamaican Poorwill
Endemic to Jamaica; possibly extinct; known from historical specimens; no confirmed records since the 19th century.
保护状况
Spotted Nightjar
Jamaican Poorwill
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 …
Jamaican Poorwill
Brown and rufous mottled above with dark vermiculations; pale buff below with dark barring; white throat patch in male; buff and dark barred tail; no white wing patches. Closely resembles …
About These Birds
Spotted Nightjar
中型夜鹰（约103克）。栖息于澳大利亚大陆的开阔林地和纺锤草草地。无危。
Jamaican Poorwill
A medium Caprimulgidae poorwill (~55 g) endemic to Jamaica; possibly extinct or extremely rare. Last confirmed record in 1860; reported subsequently but never verified. Inhabited dry limestone scrub forest. Cryptic mottled plumage. Presumed nocturnal insectivore. Not currently evaluated by IUCN.