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
John Shade John Shade John Shade is a fictional character in Vladimir Nabokov's 1962 novel "Pale Fire". The structure is notoriously difficult to unravel, but most readers agree that Shade is a poet married to his teenage sweetheart, Sybil. Their only child, a daughter named Hazel, apparently committed suicide some time before the novel's action begins. Shade lives in the college town of New Wye, amidst the Appalachian Mountains. His fame is sufficient for television pundits to often mention him in the same breath ("one oozy footprint behind") as his fellow poet Robert Frost, an association which Shade does not entirely enjoy,