Anatidae, Animalia, Anseriformes, April, Aves, Chordata, Hooded merganser, L. cucullatus, Lodphodytes cucullatus, North America, US, USA, Wisconsin, Wisconsin lake, bird, black, breeding plumage, brown, call, calling, chestnut, crest, diving duck, drake, drake duck, drake hooded merganser, drake merganser, drake sea duck, duck, duck swimming, feathers, lake, lophodytes, male, male hooded merganser, male sea duck, mating behavior, merganser, merganser swimming, natural, nature, north american, northern Wisconsin, northern lake, northwoods, raised crest, raised crest feathers, scenic, sea duck, spring, spring time, springtime, striking, swim, swimming, water, waterway, wetland, white, wild, wilderness lake, wildlife, yellow eye