Spotted Nightjar vs Long-trained Nightjar
Eurostopodus argus 比較対象 Macropsalis forcipata
Side-by-Side Comparison
| 属性 | Spotted Nightjar | Long-trained Nightjar |
|---|---|---|
| 学名 | Eurostopodus argus | Macropsalis forcipata |
| 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) | 45.0 cm (17.7 in) |
| 体重 | 102.5 g (3.62 oz) | 111.25 g (3.92 oz) |
| 食性 | Aerial insectivore; hawks large moths, beetles, and flying insects at dusk and dawn over Australian … | Aerial insectivore; hawks moths and beetles in nocturnal flight over Atlantic Forest grassland and scrub. |
| 一腹卵数 | 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
Long-trained Nightjar
Loud, resonant 'chuck' or 'tuck' notes; hollow knocking quality; calls from Atlantic Forest edge at night; males perform aerial display; alarm a rapid staccato bark
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.
Long-trained Nightjar
Endemic to southeastern Brazil (São Paulo, Minas Gerais, Rio de Janeiro); resident of Atlantic forest edge; vulnerable due to deforestation.
保全状況
Spotted Nightjar
Long-trained 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 …
Long-trained Nightjar
Male with extremely elongated outer tail feathers forming long train up to 60 cm; dark brown with buff and rufous mottling; white throat; white wing bar. Female lacks elongated tail; …
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。
Long-trained Nightjar
A large Caprimulgidae nightjar (~111 g) of subtropical Atlantic forest and open country in southeastern Brazil. Males have extraordinary forked tails extending far beyond body length. Inhabits forest edges and clearings in Atlantic Forest remnants. Feeds on moths and large insects. Least Concern; some decline with deforestation.