Animalia, Aves, Chordata, July, North America, Passeriformes, US, USA, Vireo olivaceus, Vireonidae, Wisconsin, bird, black, brush, distinctive, environment, fauna, feathers, habitat, meadow willow, natural, nature, north american, north woods, northern, northwoods, perch, perched, red, red iris, red-eye, red-eyed vireo, shrub, shrubby, song bird, songbird, summer, vireo, wild, wildlife, willow