Ключевые слова: animal, animals, baby, beak, behavior, bird, birdnest, birds, brood, brown, chick, chicks, childhood, eat, eating, family, father, feather, featherless, feed, feeding, food, fowl, green, habitat, helpless, home, hungry, life, little, mother, mouth, nature, need, nest, nestling, new, newborn, nurture, open, open mouth, outside, parent, parental, protect, small, wild, wildlife, young,