Animalia, Aves, Chordata, June, North America, Picidae, Piciformes, S. varius, Sphyrapicus, Sphyrapicus varius, US, USA, Wisconsin, adult, adult sapsucker, adult woodpecker, babies, bird, black, cavity nest, cavity nest hole, checking on nestlings, clinging to tree, fauna, feathers, hole, natural, nature, nest, nest hole, nesting, nestling, north american, northern, northern Wisconsin, northwoods, perched, perched on tree, red, sapsucker, summer, white, wild, wildlife, woodpecker, yellow, yellow-bellied sapsucker, young