Animalia, Aves, Chordate, L. ruficapilla, Leiothlypis, Leiothlypis ruficapilla, May, Nashville Warbler, North America, Parulidae, Passeriformes, US, USA, Wisconsin, adult male, aspen, aspen tree, bird, forest, forest edge, forest's edge, gray, grey, male, male Nashville warbler, male bird, male songbird, male warbler, natural, nature, north american, north woods, northern, northern Wisconsin, northwoods, perch, perched, showing crown, showing top of head, song bird, songbird, spring, top of head, tree, tree branch, trees, warbler, white eye-ring, wild, wildlife, wood warbler, woodland, woods, yellow