Black-and-rufous Swallow vs Bahama Swallow
Hirundo nigrorufa 对比 Tachycineta cyaneoviridis
Side-by-Side Comparison
| 属性 | Black-and-rufous Swallow | Bahama Swallow |
|---|---|---|
| 学名 | Hirundo nigrorufa | Tachycineta cyaneoviridis |
| 目 | Passeriformes | Passeriformes |
| 科 | Hirundinidae | Hirundinidae |
| 保护状况 | Least Concern | Endangered |
| 体长 | — | — |
| 翼展 | 21.4 cm (8.4 in) | 22.5 cm (8.9 in) |
| 体重 | 14.5 g (0.51 oz) | 17.63333333333333 g (0.62 oz) |
| 食性 | -- | -- |
| 产卵数 | 2-3 | 2-4 |
| Population Trend | — | — |
Habitat Comparison
保护状况
Least Concern
Black-and-rufous Swallow
Endangered
Bahama Swallow
About These Birds
Black-and-rufous Swallow
黑棕燕分布于非洲中部的安哥拉和赞比亚至坦桑尼亚一带的稀树草原。上体黑色,下体棕红色,飞行敏捷。栖息于开阔草地和林地,以飞行中的昆虫为食,常在开阔地带低空飞行捕食。
Bahama Swallow
The Bahama Swallow is an Endangered swallow endemic to the Bahamas, weighing about 17.6g with a wingspan of 22.5cm. It has iridescent blue-green upperparts and white underparts, and breeds in pine woodlands. Habitat loss and introduced predators threaten its small and declining population.