Ключевые слова: animal, avian, bird, birdwatching, black, blackthroated green warbler, branch, brown, canary, consume, cook county, cook county forest preserve, devour, eat, eating, fauna, forest, forest preserve, green, illinois, mcclaughry spring woods, oak, ornithology, perch, perched, savanna, setophaga virens, sit, songbird, stick, tree, twig, united states, warbler, wildlife, woodland, yellow,