American tree sparrow, Animalia, April, Aves, Chordata, Emberizidae, North America, Passeriformes, S. arborea, Spizella aborea, USA, Wisconsin, barbed wire fence, barbed-wire fence, bird, country side, dark, environment, farmer's field, feathers, fence, fence post, fencepost, field, gray, grey, habitat, light grey gray, mono tone, monotone, natural, nature, north american, nostalgic, perch, perched, red, rural, rustic, rusty cap, rusty line through eye, small dot on chest, song bird, songbird, sparrow, sprarrow, spring, two tone, two-tone beak, two-tone bill, wild, wildlife, winter, winter sparrow