Ключевые слова: american, animal, avian, background, behavior, bird, birding, branch, carolinensis, cat, catbird, chick, closeup, conservation, dumetella, dumetella carolinensis, eco, ecology, environment, fauna, feathers, fence, forest, gray, gray catbird, grey, hatch ling, isolated, log, migratory, mimic, mimidae, nature, nest, north, ontario, ornithology, passerine, perched, plumage, song, songbird, species, spring, vertebrate, white, wild, wildlife, young, zoology,