All birds begin their lives carefully enclosed in ____. The size and colour of eggs and the amount of time a bird remains inside the egg varies by species, but eventually, all birds emerge from the egg if it is ____. Some birds possess a specialised, temporary bony growth on their beaks called an ____ that helps them crack open the shell. During the time immediately following a young bird’s exit from the egg, it is known as a ____. Young birds are covered in soft ____ instead of ____ and cannot fly. This makes them vulnerable to ____ and incapable of feeding themselves. At this stage, baby birds are called ____ because they spend all their time snug in the nest, relying on their parents for protection and food. Eventually, ____ lose their down and sprout feathers, which they need for flight. Young birds who are growing ____ and learning to fly are called ____. These young birds work hard to practice the skills required for flying and strengthen their muscles. Once their flight feathers have grown in, they take their first flight, which is called a ____. Birds that are fully feathered and fly from the nest are now ____. These birds are ready to find mates and build nests of their own so they can lay eggs and become parents themselves, thus starting the bird life cycle all over.

Y5 - Life-cycle of a bird

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