Woodpeckers follow the drill to avoid getting stuck

If you were to hammer a nail into wood, you could have a hard time getting it out again. And anyone who has watched a woodpecker bashing furiously at a tree trunk may well wonder why its sharp beak

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Sam Van Wassenbergh ,Antwerp University ,ஆண்ட்வெர்ப் பல்கலைக்கழகம் ,