Have you ever found holes in trees? In some cases they are made by woodpeckers. In these pictures a pileated woodpecker was at work, finding grub to eat. When a woodpecker taps a tree for food the tree is usually already under stress.
If you spent a day shadowing me the way I shadowed ten kids for my latest book "Kids Who Grow Their Own Food" you would find me walking my new puppy, playing with my cat, puttering in the garden and harvesting some food for the day, going for a hike with friends and finishing the day by reading a good book.