"Walking With a Dinosaur" is a Sesame Street song performed in episode 4608. Elmo and Chris learn that modern birds are descendants of dinosaurs from millions of years ago. Big Bird, who has been unable to participate in the dinosaur festivities of the day because of his missing costume, is pleased to learn he's part dinosaur. He leads the gang on a musical stroll around the street, demonstrating some "dinosaur things" such as tweeting and roaring.