Sid is a cockatoo with a huge personality and a highly developed sense of humor. He took a liking to Dave but didn't like his glasses. Sid repeatedly yanked them off Dave's face and threw them to the floor. It wasn't clear why Sid was doing this until he started to laugh at his own pranks. After a few minutes, this became a very entertaining game that had the two of them laughing. Cockatoos are highly intelligent and very social, demanding a lot of attention from their people. Amazingly, Sid even removes the glasses carefully before tossing them aside.