Controlling The Owl Statues:

At one point you have to move all the statues of owls somewhere. When you move an owl statue to where its supposed to be, you get a letter. After you get the letter, look around and you might see a treasure box. (optional if you want to get the treasure box). If there is a gap between you and the treadure box, move the owl into the gap. Then you can jump across and get the treasure box.