//"+"script>"); Spends winters in south as far as Mexico, mainly on large lakes and rivers, occasionally on saltwater. Similar Species "); Common Merganser | behavior | feed and protection | species etc Description. Cornell Lab of Ornithology, Ithaca, New York, USA. Males chase each other during communal courtship displays, sometimes bumping or striking each other. var pageTracker = _gat._getTracker("UA-129491-1"); Common Mergansers living along rivers may spend hours resting on rocks or on shore. Foraging behavior of Common Mergansers (Mergus merganser) and their dispersion in relation to the availability of juvenile Pacific salmon (Doctoral thesis, The University of British Columbia). : "http://www. In northern forests Common Mergansers will take up residence in nest boxes near lakes or rivers, as long as the boxes are large with a large opening. Some species, like the Common, are quite social and live in flocks. The Common Merganser is one of our biggest ducks, about the size of some loons. birds! During the breeding season they supplement their fish diet with caddisflies, mayflies, backswimmers, flies, water striders, dragonflies, crane flies, beetles, caterpillars, freshwater sponges, spiders, snails, mussels, and other invertebrates. They tend to prefer freshwater wintering habitat over saltwater, but they may winter in coastal bays, estuaries, and harbors.Back to top, Common Mergansers mostly eat fish, but they also eat aquatic invertebrates (including insects, mollusks, crustaceans, and worms), frogs, small mammals, birds, and plants. Pearce, John, Mark L. Mallory and Karen Metz. Common Merganser: Six to seventeen light buff or yellow eggs are laid in a down-lined hollow on the ground or in a tree cavity. After laying eggs she lines the nest with downy feathers plucked from her own breast. Forages by diving from the surface and chasing down prey underwater; hooked upper mandible with serrations are designed to catch slippery fish. Females sometimes lay their eggs in other ducks’ nests, including other Common Mergansers as well as Hooded Mergansers or Common Goldeneyes. Basic facts about Common Merganser: lifespan, distribution and habitat map, lifestyle and social behavior, mating habits, diet and nutrition, population size and status.
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