The term 'lake bird' can refer to two different species of birds that are commonly found near lakes: swans and loons. Swans are large waterfowl with long necks and a graceful, curved bill. They are usually white or gray in color and have a wingspan of up to 3 meters. Loons are smaller than swans and have a more pointed bill. They are usually black and white in color and have a wingspan of up to 1.5 meters. Both swans and loons are excellent swimmers and can be seen swimming on the surface of lakes or diving underwater for food.