In this months Happy Meal your kids can discover the feisty folk from Bird Island with the Angry Birds Movie. Happy Readers Book Offer. Pop out the voucher on your childs Happy Meal box and present it at the till of any participating WHSmith store* to receive either ‘The Angry Birds Movie Activity Book or ‘The Angry Birds Movie: Trouble on Bird Island for just £1. ‘The Angry Birds Movie: Trouble on Bird Island is also available as an eBook which you can download using the voucher code on the Happy Meal box.