Bates's Nightjar vs Archbold's Nightjar
Caprimulgus batesi 对比 Eurostopodus archboldi
Side-by-Side Comparison
| 属性 | Bates's Nightjar | Archbold's Nightjar |
|---|---|---|
| 学名 | Caprimulgus batesi | Eurostopodus archboldi |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Caprimulgidae | Caprimulgidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 37.1 cm (14.6 in) | 41.0 cm (16.1 in) |
| 体重 | 100.5 g (3.55 oz) | 77.0 g (2.72 oz) |
| 食性 | Nighttime aerial hunter of moths and large beetles; forages in low-level coursing flight above grassland … | Aerial insectivore; catches moths and beetles in nocturnal flight over New Guinea montane forest. |
| 产卵数 | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Bates's Nightjar
Deep, resonant churring trill; one of larger African Caprimulgus; low hollow 'churrrr' from Central African rainforest; calls at night from dense lowland forest
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
Bates's Nightjar
Found across West Africa from Gambia east to Sudan and south to the DRC. Resident in open savanna. Male has spectacular elongated tail feathers.
Archbold's Nightjar
Resident of montane forest in central New Guinea (Snow Mountains and Star Mountains) above 1,500 m; very poorly known.
保护状况
Bates's Nightjar
Archbold's Nightjar
How to Tell Them Apart
Bates's Nightjar
Large and very dark; blackish-brown upperparts with minimal pale patterning; small white throat spot; underparts dark brown with buff barring; one of the darkest nightjars, inhabiting dense Central African rainforests.
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
Bates's Nightjar
贝茨夜鹰，体长24–26厘米，分布于西非和中非几内亚湾，栖息于低地原始雨林，鲜为人知。
Archbold's Nightjar
体重约77克的小型夜鹰，栖息于新几内亚内陆的亚高山草地。以理查德·阿奇博尔德命名。