Ключевые слова: animal, avian, beak, bill, bird, black, breeding, bring, carry, caught, cavity, claws, climb, come, common, dendrocopos, entrance, feathers, feeding, foliage, forest, great, habitat, hole, hollow, insects, larvae, leaves, log, major, male, mouth, nature, nest, ornithology, outdoors, parent, parks, pied, pileated, poplar, populus, red, spotted, spring, tree, wildlife, woodpecker,