Woodpeckers can hammer 25 strokes while their heads travel more than 20 feet per second. If you banged your head into a tree for a few seconds, the results would be headaches, detached retinas, concussions, eye damage from flying wood chips, and massive skin damage. With all the talk about brain damage from football collisions, perhaps we can learn from the woodpecker design.
Many design features protect woodpecker brains. Their skulls are thick and heavily ossified to prevent shattering. Shock-absorbing tissue between the eyes and around the skull acts as a crash helmet. Spongy material separates the skull and bill. A sac of fluid surrounds human brains, but a tough membrane surrounds a woodpecker’s brain to prevent it from bouncing around. The woodpecker brain is tiny, weighing a fraction of an ounce, so it has much less inertia.
Woodpecker eyes are held tightly in place by bone and surrounding tissue to prevent damage. A membrane blinks over the eye to keep out wood chips. The nostrils are covered with fine bristly feathers or are narrow slits to protect the bird’s air chambers. Woodpeckers have long tongues that reach deep inside tree openings to capture insects. The tongue wraps around inside the skull, further protecting the brain when the bird is hammering on the tree. The woodpecker’s bill is solid and shaped like a chisel. Thick and strong neck muscles absorb the kinetic energy.
Woodpeckers are essential to forest ecosystems. They control worms and insects that can infect trees, avoiding blight and infections. Medical personnel dealing with head trauma have much to learn from the woodpecker design. Design features requiring so many specialized features are difficult to explain by chance. A step-by-step evolutionary process can’t explain the production of the many unique features. God’s creatures are designed to do specific jobs, and “We can know there is a God through the things He has made” (Romans 1:20).
— John N. Clayton © 2024
References: Audubon Magazine for Jan/Feb 1999, page 104, and National Geographic “Wildlife.”