Brown pelicans are dark and bulky. The sexes are similar in plumage; they reach 106-137 cm (42-54 in) in length, weigh from 2.75 to 5.5 kg (6-12 lb) and have wingspans from 1.83 to 2.5 m (6 to 8.2 ft). The head is white with a pale yellow wash on the crown; the long bill is grayish; back, rump, and tail are streaked with gray and dark brown; the breast and belly are a blackish-brown; eyes pale yellow; and legs and feet are black. Immatures have brownish-gray necks and white underparts. All pelicans have bills that are as long as or longer than their heads. A large naked skin pouch is suspended from the lower half of the hooked bill.