Angry Birds: Mystery of the Green Bird

Angry Birds: Mystery of the Green Bird is an upcoming story book by Puffin Books, to be released on July 4, 2013. It is published as part of its three-year deal with Rovio Entertainment.

Description
The survival of the Angry Birds is at stake! The Angry Birds are mystified when they discover a new, green bird on Piggy Island. Little do they know that the Green Bird is really a tiny Pig in disguise. His mission is to steal the eggs, but will he succeed? Find out in this new story, and enjoy the brilliant extra quiz and puzzle content at the back. Perfect for Angry Birds fans.