Maximum Ride: The Angel Experiment - James Patterson

This book is about five kids who are half human half bird. They were created by evil scientists that tortur them and do experiments on them at a place called the School. The kids are able to fly, run really fast, and they have immense strength. "The Flock," as they are called, escape from their cages and are trying to live on their own. Angel, the youngest of the kids, is recaptured and the others go back so save her. In this process, they are being chased by Erasers, who are half wolf half human.