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
Pale ale on Trent, which tend to be referred to as pale ales. Different brewing practices and hop levels have resulted in a range of taste and strength within the pale ale family. Amber ale is an emerging term used in Australia, France and North America for pale ales brewed with a proportion of amber malt and sometimes crystal malt to produce an amber colour generally ranging from light copper to light brown. A small amount of crystal or other coloured malt is added to the basic pale ale base to produce a slightly darker colour, as in some Irish and British