The Woodpeckers' Task

The short article, The Anatomy of Painless Peeking in The National Geographic of Oct. 2007, by Helen Fields discusses the task of woodpeckers who do their job of feeding themselves without any nasty headache or pain. She supports this argument by giving one statement from a doctor who studies about Woodpeckers' movement. It shows that their eyes are more tightly held in place by bone and surrounding tissue, totally different from human eyes which have room to move around. Furthermore, she was still curious if the woodpeckers would have headaches when they do their job for seeking food. Finally, Helen draws the conclusion from her studies that animals never do anything to hurt themselves.