What do birds that live by water eat?

Fish, insects, crustaceans, worms, amphibians, small mammals, bird eggs and chicks, fruit, berries, nuts, and seeds are found on or near water and often serve as food items for water birds like loons, grebes, penguins, cormorants, pelicans, albatrosses, gulls, terns, skimmers, shorebirds, ducks, mergansers, and geese.