Birds agree that feathers cover their bodies, but not all of them are capable of flying and can show something completely different in their lifestyle.
The characteristic knocking sound may come from the wooden armor. This incredible bird tries to carve a nest or look for food with a very fast knock.
However, a ladder is not the one to get results. It’s as if the bird doesn’t know this and is trying quite seriously. It's like a gun crackling with a quick knock.
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(Source: kotikedvenc.co.hu | Pictures: pixabay.com (Pictures are illustrations) | Video: https://www.youtube.com/watch?v=YQ2wIOcO7aE)