The Common Loon is the largest and most widespread of the five loon species found in North America. A formidable swimmer and diver like theKing Penguin or Red-breasted Merganser, this handsome waterbird is a veritable avian submarine, beautifully adapted to a life in and on the water.
SCIENTIFIC NAME:Gavia immer POPULATION: 500,000-700,000 TREND: Stable HABITAT: Nests on lakes and ponds in northern forests; winters on marine bays and coasts, and lakes.
Common Loons have a number of distinctive calls. One of the best-known is a fluttering tremolo call, which some say sounds like crazed laughter, and may have given the bird its common North American name. Common Loons give this call when they feel threatened, particularly in the vicinity of their nests.