Episode Title:Happy Birthday to You.Episode Description:David talks about the childhood of gnomes, using his friend Harry and his family as an example. David describes Harry's children, Billy and Belle, and the way children grow up. It is also Billy and Belle's birthday, and David takes Susan to the party. On the way, he helps a mother hen learn how to keep up with her chicks. Then they go to the party. While Susan plays party games with the other children, Harry takes David to the forest nearby and tells him how he is sad because the men from the city are cutting down all the trees...