The American White Pelican (Pelecanus erythrorhynchos) is one of two species of pelican in North America, along with the Brown Pelican (Pelecanus occidentalis). While occasionally seen in the same locations, American White Pelicans and Brown Pelicans prefer different habitats and their manner of feeding is as different as their plumage.
American White Pelicans are large, mostly white birds. Their primary and secondary feathers are black. In breeding season adults develop a yellow crest. Juvenile birds display a brown wash on the head, neck and wings. Non-breeding adults have yellow bills, which turn more orange and grow a vertical fibrous plate on the maxilla (aka upper mandible) for breeding. They shed their plates after the eggs have been laid.
American White Pelicans generally inhabit fresh water rivers, lakes, and ponds. They also visit saline bodies of water inland such as the Salton Sea, Mono Lake, and the Great Salt Lake. American White Pelicans range along the Pacific and Gulf coasts in the winter. They migrate inland to the Rocky Mountains in the US and Canada to breed and fledge young. American White Pelicans are social birds. They congregate in large flocks, roosting on beaches and islands or fishing cooperatively by herding schools of fish into a confined area. Contrary to the famous limerick by Dixon Lanier Merritt,
A wonderful bird is the pelican,
His bill will hold more than his belican,
He can take in his beak
Enough food for a week
But I’m damned if I see how the helican!
pelicans do not use their beaks for storing food. American White Pelicans feed by floating along, their heads under water to find their prey, scooping the fish up in their bills. In contrast, Brown Pelicans dive into the water to grab their target fish. These three birds fed in a well-stocked pond, so herding was not necessary. They caught a fish on nearly every attempt.