Read the life cycle of a bird . Living things grow and there are stages in their life. That is life cycle. The life cycle of a bird has five stages: Stage 1: Birds come from eggs. Adult females produce eggs. There is a young animal in the egg. Stage 2: Bird eggs have a hard shell. When the young animal grows, it breaks the egg. Stage 3: The baby animal comes out. This is hatching. Stage 4: The chick grows up and becomes an adult. Stage 5: The adult female can lay eggs and the cycle goes on.