More Amazing Animals
On this page we will look at the amazing Woodpecker.
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Woodpeckers are best known for their habit of chiseling holes in trees for nests and to hunt insects. When they are drilling, they can peck about 15 to 16 times in a single second. Woodpeckers will also drum on tree trunks to signal other woodpeckers. All this drilling and tapping adds up to about 12,000 pecks a day. So how come the woodpeckers don’t get splitting headaches afterwards?
First, woodpeckers’ brains are small and attached firmly to their skulls. This ensures that the shock from the impacts is distributed evenly. Second, there is a layer of shock-absorbing tissue between their skull and their bill, which helps to lessen the force of the impact.
Besides protecting their brains, woodpeckers must also protect their eyes and noses from splinters and sawdust when they are drilling. In the millisecond before the woodpecker’s bill strikes the wood, a thick membrane closes over its eyes to keep out debris. The woodpecker’s nostrils are slit-like and are protected by special feathers.
Woodpeckers also have to anchor themselves firmly to the tree they are drilling into. Their feet have four clawed toes, two pointing forward and two pointing backward. This allows them to grasp the tree trunk. Their stiff tails are used to brace themselves while they are drilling.
A picture of a woodpecker and its cactus nest.
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