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
Throw shade Throw shade The expressions "throw shade, "throwing shade", or simply "shade", are slang terms used to describe insults. Merriam-Webster defines "shade" as "subtle, sneering expression of contempt for or disgust with someone—sometimes verbal, and sometimes not" . OxfordDictionaries.com defines "throw shade" as a phrase used to "publicly criticize or express contempt for someone". The slang version of "shade" originated from the black and Latino gay communities, and was initially strictly used by those communities. The first major use of "shade" that introduced the slang to the greater public was in the documentary film "Paris Is Burning" (1990), which is about