Anatiadae, Animalia, Anseriformes, Aves, Chordata, Hooded merganser, L. cucullatus, Lophodytes cucullatus, Merginae, North America, US, USA, Wisconsin, animal, aquatic, bird, dimorphic, duck, environment, female plain one alone single juvenile, habitat, hood, merganser, natural, nature, north american, north woods, northwoods, wild, wildlife