what is referred to as pale crag martin?
A small passerine bird.
Pale crag martin
The pale crag martin ("Ptyonoprogne obsoleta") is a small passerine bird in the swallow family that is resident in northern Africa and in southwestern Asia east to Pakistan.
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Pale crag martin [SEP] Introduction
The pale crag martin ("Ptyonoprogne obsoleta") is a small passerine bird in the swallow family that is resident in northern Africa and in southwestern Asia east to Pakistan. It breeds mainly in the mountains, but also at lower altitudes, especially in rocky areas and around towns. Unlike most swallows, it is often found far from water. It is 12–13 cm (4.7–5.1 in) long, with mainly brown plumage, paler-toned on the upper breast and underwing coverts, and with white "windows" on the spread tail in flight. The sexes are similar in appearance, but juveniles have pale fringes to the upperparts and flight feathers.