Animalia, Aves, Chordata, North America, Picidae, Piciformes, S. varius, Sphyrapicus, Sphyrapicus varius, US, USA, Wisconsin, adult, adult feeding fledgling, adult sapsucker, adult woodpecker, beak to beak, bill to bill, bird, black, fauna, feathers, feed, feeding, fledgling, food, forest, immature, immature sapsucker, immature woodpecker, immature yellow-bellied sapsucker, juvenile, juvenile yellow-bellied sapsucker, natural, nature, north american, north woods, northern, northern Wisconsin, northwoods, open bill, outdoors, outside, parent, parent feeding fledgling, red, sapsucker, summer, supplemental feeding, tree, trees, white, wild, wildlife, woodland, woodpecker, woods, yellow, yellow-bellied sapsucker, young, young woodpecker, young yellow-bellied sapsucker