From #1 New York Times bestselling, award-winning author and illustrator Mo Willems, comes the highly anticipated annual event, The Pigeon's BIRD-DAY! The Pigeon has the hat. And the hot dog cake! He is ready for the presents! But ... do YOU think The Pigeon can handle his BIG bird-day surprise!?! Get ready for a very special birthday celebration from three-time Caldecott honoree Mo Willems.