Pale crag martin to do so, it would cast doubts on their specific distinctness. There are several subspecies differing in plumage shade or size, although the differences are clinal, and races interbreed where their ranges meet. The pale crag martin of the nominate subspecies "P. o. obsoleta" is 12–13 cm (4.7–5.1 in) long with light brown upperparts, becoming paler on the lower back, and a short square tail that has small white patches near the tips of all but the central and outermost pairs of feathers. It has a pale grey throat, upper breast and underwing coverts, and the rest of the underparts
A Whiter Shade of Pale promotional clip for "A Whiter Shade of Pale" was shot in the ruins of Witley Court in Worcestershire, England. It features four of the five musicians who played on the hit single: Gary Brooker, Matthew Fisher, David Knights and Ray Royer, in performance and walking through the ruins. Only the drummer in the video isn't on the record: early band member Bobby Harrison is seen miming to session man Bill Eyden's drumming. The film was directed by Peter Clifton, whose insertion of Vietnam War newsreel footage caused it to be banned from airplay on the BBC's "Top of the Pops"