From easy reader and chapter book series to epic fantasies, favorite characters, settings and story lines reemerge in new additions. Young readers will welcome the return of Mo Willems's pessimistic pachyderm and spirited pig. In There Is a Bird on Your Head! Gerald the elephant despairs over a family of birds that nests atop his cranium, while Piggie is delighted. And in I Am Invited to a Party! party expert Gerald helps Piggie prepare for all possibilities, as they get dressed for a fancy party, pool party and costume party-all at the same time.