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 "A Whiter Shade of Pale" was jointly recognised as "The Best British Pop Single 1952–1977" at the BRIT Awards, part of Elizabeth II's Silver Jubilee. In 1998 the song was inducted into the Grammy Hall of Fame. In 2004, it appeared at number 57 on "Rolling Stone" magazine's list of the "500 Greatest Songs of All Time". British TV station Channel 4 placed the song at number 19 in its chart of "The 100 Greatest No. 1 Singles". In 2018, the song was inducted into the Rock and Roll Hall of Fame in a new category for singles. The first