What is the feeling of the story in Chapter 7. Also, what is the mood and tone for this chapter? Mr. Poppers Penguins

Bill and Janie go to school, Mr. Popper is busy shaving (because he feels a surge of pride about the ownership of the penguin), and Mrs. Popper is busy in the kitchen doing dishes. This presents Captain Cook the opportunity to wander around the house. He pecks into every nook and cranny, and he finds a wide variety of junk and little knickknacks, which he brings back to the refrigerator in a nest-building instinct. Everything from a chess piece to thread to coins to a partially-consumed lollipop have been gathered. The mood is exciting and entertaining, even hopeful. The tone is light and expectant.