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2
This is a special beak. It is stronger than a tree trunk. The woodpecker makes holes in tree trunks.
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3
It hits the tree trunk with its sharp beak, again and again. Peck, peck, peck. Peck, peck, peck.
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4
It makes a hole in the tree trunk. Then it makes the hole bigger. It makes the hole big enough to sit in.
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11
Why don't the woodpeckers get headaches? They hit their beaks against a tree trunk all day long.
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12
But you never see a woodpecker take aspirin⁽¹⁾. They must have very hard beaks. They must have very hard heads.
