Big Bird and Little Bird by Tango Books is a fantastic pop-up and fabulous height chart book. Little Bird is too little to do all the things that Big Bird can do - but he tries and tries and finally succeeds. This fun pop up book says to children that it’s the trying that counts. There is a detachable height chart at the back for watching Little Bird grow. A Hard Covered, 18 illustrated thick paper pages. Ages 3 –5 years