Animalia, Aves, Chordata, Dendroica, May Spring, Myrtle, North America, Parulidae, Passeriformes, Setophaga, Setophaga coronata, US, USA, Wisconsin, adult, adult Myrtle, bird, black, breeding plumage, fauna, feathers, head turned, looking backwards, male, male warbler, male yellow-rumped warbler, natural, nature, north american, north woods, northern, northern Wisconsin, northwoods, outdoors, song bird, songbird, warbler, white, wild, wildlife, wood warbler, wood-warbler, yellow, yellow-rumped warbler