Grouse are heavily built like other Galliformes, such as chickens. They range in length from 31 to 95 cm (12 to 37 in), and in weight from 0.3 to 6.5 kg (0.66 to 14.33 lb). Males are larger than females—twice as heavy in the western capercaillie, the largest member of the family. Grouse have feathered nostrils. Their legs are covered in feathers down to the toes, and in winter the toes, too, have feathers or small scales on the sides, an adaptation for walking on snow and burrowing into it for shelter. Unlike other Galliformes, they have no spurs.