Here's a wonderful example of a habitat snag left when a tree was removed - this stump is about 10 feet tall, and will continue to provide soil stability, habitat for birds and other critters, and as the wood decays it will contribute organic matter to the soil to assist the growth of other plants. Whenever possible, habitat snags should be left in place. This one just blends right in with the surrounding vegetation, but you can see where critters have been making their homes.