Ключевые слова: animal, arrive, avian, avifauna, bird, bird feeder, birdwatching, brown, cold, domestic, eat, eating, fauna, feather, feed, feeder, feeding, flight, fly, food, garden, habitat, house sparrow, invasive, land, landing, male, mix, natural, nature, nonnative species, ornithology, outdoors, outside, outstretched, passer domesticus, passerine, plastic, plumage, seed, seeds, small, sparrow, species, sunflower, tube, wild, wildlife, wings, wingspan,