Eurasian Crag Martin

The Eurasian crag martin is 13–15 centimetres long, with a wingspan of 32–34.5 centimetres and an average weight of 23 grams. It has ash-brown upperparts and paler underparts and a broader body, wings and tail than any other European swallow. The short, square tail carries white patches near the tips of all but the central and outermost pairs of feathers. The underwing and undertail coverts are blackish, the small bill is mainly black and the legs are brownish-pink. Juveniles show buff-brown tips on the head, upperparts and wing coverts. (Wikipedia, general species account)

It breeds in the mountains of southern Europe, northwestern Africa and across the Palearctic. Many European birds are resident, but some northern populations and most Asian breeders are migratory, wintering in northern Africa, the Middle East or South Asia. It can be confused with the other three species in its genus, but is larger, with brighter tail spots and a different plumage tone. The sexes look alike. (Wikipedia, general species account)