Animalia, Aves, Chordata, Common Yellowthroat, Geothlypis, Geothlypis trichas, May, North America, Parulidae, Passeriformes, USA, Wisconsin, adult, animal, bird, black, black face, black mask, brush, environment, fauna, feathers, habitat, male, mask, natural, nature, north american, north woods, northern, northwoods, song bird, songbird, spring, spring time, springtime, wild, wildlife, yellow, yellow throat