Why do green woodpeckers knock on wood ?

Name: Why do green woodpeckers knock on wood ?
Uploaded: 2020-04-10T22:52:22+00:00
Duration: 1 min 40 s
Channel: Brut Nature
Description: They knock on wood all day long with their beaks, but what exactly are woodpeckers trying to do?

Brut Nature

They knock on wood all day long with their beaks, but what exactly are woodpeckers trying to do?

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