Hook by Ed Young

From chapters.ca:
A young eagle learns to soar in Caldecott- winner Ed Young's newest work. With beautiful, sweeping artwork and spare, lyrical text, Ed Young tells the story of a boy who finds an egg and gives it to a flock of chickens. When the egg hatches not a chick but an eaglet, the hens, the roosters, and the boy all band together to help the young bird fly. In this lovely story about friendship and dedication, the eaglet perseveres and leaves behind the dusty earth for endless pastel skies.