Kevin and the Blackbirds - David Almond - Bog

"In lean times, a boy's parents send him to a monastery to be cared for. After study and prayer, the monks let young Kevin run and play in the woods and fields. But the time comes when he must set aside childish ways. Shut in his lonely cell, yearning for home and the freedom of the outdoors, Kevin reaches through the window toward the light as two blackbirds land in and feather the nest of his hands. Kevin waits, day after day, for their eggs to hatch, and it's not until the chicks spread tiny wings and fly off--three new wild things gone out into the world--that he can rest and the monks can see what they must do"--