Ключевые слова: against, air, animal, battle, beach, bird flu, black, carry, catch, clear, cloud, coast, collisions, compete, enemy, escape, family, feather, feed, fight, float, flock, flocks of birds, fly, food, frost, gray, gull, have to emigrate, hot, hungry, jump, look, migrate, move, nature, sea, sky, snatch, snow, sunny day, the enemy, to freeze, to get food, warm, white, wild nature, wind, wing, winter,