A Nest Full of Eggs (Let's-Read-and-Find-Out Science, Stage 1)

What's inside that pretty blue egg?

A baby bird is growing inside that egg. Slowly the bird develops, until one day it cracks through the shell. Safe inside the nest, under the care of its parents, the chick grows stronger. Soon it will learn how to fly and take care of itself. By next spring it will be ready to build its own nest and raise chicks of its own.