The Brown Pelican is the smallest of the eight species of pelican, although it is a large bird in nearly every other regard. It is 106-137 cm (42-54 in) in length, weighs from 2.75 to 5.5 kg (6.06 to 12.1 lb) and has a wingspan from 1.83 to 2.5 m (6.00 to 8.2 ft). Like all pelicans, this species has a very large bill, 28 to 34.8 cm (11.0 to 13.7 in) long in this case, with a gular pouch on the bottom for draining water when it scoops out prey.