Congo Martin
Riparia congica
分类位置
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形态与习性
The Congo martin or Congo sand martin (Riparia congica) is a small passerine bird in the swallow family. It occurs only along the Congo River and its tributary, the Ubangi. It is fairly abundant within its restricted range. The habitat requirement of this non-migratory species is forested rivers with sandbanks for breeding. The Congo martin nests in colonies during February and March, with each pair excavating a tunnel in a sandbank about 1 m above the river. The nest itself is at the end of the
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