Pelican Bulletin - most popular info about pelikans and other birds in our world. he Brown Pelican (Pelecanus occidentalis) is the smallest member of the seven species of the pelican family. It is typically 106-137 cm (42"-54") in length. It lives strictly on coasts from Washington and Virginia to the mouth of the Amazon River. Some immature birds may stray to inland freshwater lakes. After nesting, North American birds move in flocks further north along the coasts, returning to warmer waters for winter. This bird is distinguished from the American White Pelican by its brown body and its habit of diving for fish from the air, as opposed to co-operative fishing from the surface. It eats mainly herring-like fish. Groups of Brown Pelicans often travel in single file, flying low over the water's surface. The nest location varies from a simple scrape on the ground on an island to a bulky stick nest in a low tree. These birds nest in colonies, usually on islands. Pesticides like DDT and dieldrin threatened its future in the southeast United States and California in the early 1970s. Pesticides also threatened the pelican population in Florida in this period. A research group from the University of Tampa headed by Dr. Ralph Schreiber conducted research in the Tampa Bay/St Petersburg area and found that DDT caused the pelican eggshells to be overly-thin and incapable of supporting the embryo to maturity. As a result of this research, DDT usage was eliminated in Florida and the rest of the country. The Brown Pelican is the state bird of Louisiana.