Ключевые слова: animal, barn, beak, beg, bird, black, blue, cap, ceiling, chick, chorus, demanding, duck, eat, family, fauna, feather, feeding, fledgling, flock, food, group, house, hunger, infant, life, mother, mud, national park, nature, nest, nestling, open, pretty, ravenous, roof, rustic, sitting, small, snow, sulk, summer, swallow, to sit, white, wild, wildlife, wing, yellow, young,