The peculiar growth or crest on the bill which disappears soon after the breeding season, varies greatly both in size and shape. Dr. Ridgway says: "Frequently it consists of a single piece, nearly as high, as long, its vertical outlines almost parallel, and the upper outline quite regularly convex, the largest specimen seen being about three inches high, by as many in length. More frequently, however, it is very irregular in shape, usually less elevated, and not infrequently with ragged anterior, or even posterior continuations." At this time the bill is also more or less orange-red in color.

An excellent narrative of the habits of the White Pelican is given in the Ornithology of Illinois, where Dr. Ridgway quotes the words of Col. N. S. Goss regarding those who "have not seen the White Pelicans upon their feeding grounds, but may have read Audubon's interesting description of the manner in which the birds unite and drive the fishes into shallow water, where they can catch them, which they cannot well do in deep water, as their skins are honeycombed with air cells that buoy them tip like cork, and prevent their diving, and they do not plunge for their food when Upon the wing, like their cousins, the Brown Pelicans, and therefore have to adopt fishing habits suited to shallow waters. I have often noticed the birds in flocks, in pairs, or alone, swimming on the water with partially opened wings, and head drawn down and back, the bill just clearing the water, ready to strike and gobble up the prey within their reach; when so fishing, if they ran into a shoal of minnows, they would stretch out their necks, drop their heads upon the water, and with open mouths and extended pouches, scoop up the tiny fry. Their favorite time for fishing on the seashore is during the incoming tide, as with it come the small fishes to feed upon the insects caught in the rise, and upon the low form of life in the drift, as it washes shoreward, the larger fishes following in their wake each from the smallest to the largest eagerly engaged in taking life in order to sustain life.

All sea birds know this and the time of its coming well. The White Pelicans, that have been patiently waiting in line along the beach, quietly move into the water and glide smoothly out so as not to frighten the life beneath. At a suitable distance from the shore they form into line in accordance with the sinuosities of the beach, each facing shoreward and awaiting their leaders signal to start. When this is given, all is commotion; the birds, rapidly striking the water with their wings, throwing it high above them and plunging their heads in and out, fairly make the water foam as they move in an almost unbroken line, filling their pouches as they go. When satisfied with their catch, they wade and waddle into line again upon the beach, where they remain to rest, standing or sitting as suits them best, until they have leisurely swallowed the fishes in their nets; then, if undisturbed, they generally rise in a flock and circle for a long time high in air."

The White Pelicans will consume a large amount of food; in fact, they are gluttonous. It is said that the remains of several hundred minnows have been taken from the stomach of a single pelican. Usually they are the most active in the pursuit of their prey for a short time after sunrise and also before sunset.

The chief breeding grounds of the White Pelican are from Minnesota northwards to the limit of its range. It nests also in isolated and greatly separated localities to the westward. It is said that several thousand permanently breed on the islands of the great Salt Lake. There are reasons for believing that it also breeds in Florida and westward along the Gulf of Mexico as far as Texas.