Namaqua Sandgrouse vs Black-bellied Sandgrouse
Pterocles namaqua 对比 Pterocles orientalis
Side-by-Side Comparison
| 属性 | Namaqua Sandgrouse | Black-bellied Sandgrouse |
|---|---|---|
| 学名 | Pterocles namaqua | Pterocles orientalis |
| 目 | Pterocliformes | Pterocliformes |
| 科 | Pteroclidae | Pteroclidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 32.7 cm (12.9 in) | 45.6 cm (18.0 in) |
| 体重 | 172.66666666666666 g (6.09 oz) | 427.5 g (15.08 oz) |
| 食性 | -- | -- |
| 产卵数 | 3 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Namaqua Sandgrouse
Loud, far-carrying call with resonant quality; powerful notes carrying across dry open terrain. Vocalization pattern typical of this species in its native habitat.
Black-bellied Sandgrouse
Loud, carrying call with resonant quality; deep notes carrying well across open dry terrain. Vocalization pattern typical of this species in its native habitat.
保护状况
Namaqua Sandgrouse
Black-bellied Sandgrouse
How to Tell Them Apart
Namaqua Sandgrouse
Namaqua Sandgrouse: males with chestnut and white belly bands; sandy-brown above; pin-like tail; brown-orange head; dimorphic
Black-bellied Sandgrouse
Black-bellied Sandgrouse: males with black belly; sandy-spotted above; chestnut and black neck bands; white flanks; very dimorphic
About These Birds
Namaqua Sandgrouse
Namaqua Sandgrouse (Pterocles namaqua) — 24–28 cm. Small; sandy brown; male with chestnut-and-white breast bands; pointed tail. Inhabits arid semi-desert and Karoo scrub of southern Africa. Granivore; forms vast flocks at waterholes. Male soaks belly feathers daily to carry water up to 80 km for chicks.
Black-bellied Sandgrouse
黑腹沙鸡（约360克）雄鸟具有复杂的棕色、黑色和黄色羽毛及黑色腹部。广布于中亚至伊比利亚半岛的干旱和半干旱草地及荒漠。以种子为食，常长距离飞至水源饮水，雄鸟会用腹部羽毛向雏鸟运水。近危；因农业变化和干旱导致草地退化而面临威胁。