The Eurasian Crag Martin or just Crag Martin, Ptyonoprogne rupestris, is a small passerine bird in the swallow family. It is about 14 cm (5.5 in) long with ash-brown upperparts and paler underparts, and a short, square tail that has distinctive white patches on most of its feathers. It breeds in the mountains of southern Europe, northwestern Africa and southern Asia. It can be confused with the other two species in its genus, but is larger than both,...
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