Ключевые слова: animal, background, beginning, bird, broken, brown, calorie, chicken, concept, cooking, cracked, development, diet, eat, egg, eggshell, empty, farm, food, foodstuff, fragile, growing, growth, half, healthy, hen, isolated, natural, nature, nutritious, poultry, protein, raw, shell, shells, single, speckled, uncooked, white, yolk,