Book Review: The Angel Experiment

Max has been caring for everyone, the flock, since the person who was like a father to them disappeared. Each one of them contains a special ability, including wings. They don't know what had happened, only that they had been in the lab for too long until their father figure helped them escape. But when creatures called erasers take their youngest, Angel, back to where they were created, they have to rescue her, along with trial and error.