what are its sub-species?
UNANSWERABLE
what is referred to as pale crag martin? A small passerine bird. from where did its name originate? The genus name is derived from the Ancient Greek "ptuon", "a fan", referring to the shape of the opened tail, and Procne , a mythological girl who was turned into a swallow. The specific name "obsoleta" means "worn" in Latin. where is it found? Northern Africa to Middle East extending up to Pakistan and Afghanistan.
wiki:22002471
Pale crag martin [SEP] Distribution and habitat
The pale crag martin breeds in suitable habitats throughout northern Africa and through the Middle East as far as Afghanistan and Pakistan. It is largely resident apart from local movements or a descent to lower altitudes after breeding. In addition, there is some short-range movement, including martins from southern Arabia crossing the Red Sea and wintering alongside the local breeding birds in Ethiopia and the Horn of Africa, and non-breeding "P. f. spatzi" and "P. f. presaharica" joining rock martins in Mali and Mauritania. In Pakistan, the breeding range of the subspecies "P. f. peloplasta" overlaps with that of the dusky crag martin, although that species breeds at much lower levels, and in North Africa "P.