With all the “head banging”, you would expect a Great spotted woodpecker to get a severe headache. Well, they don’t, and there’s a simple reason why, and it is to do with less brain fluid.
When the Great spotted woodpecker drums a tree, its brain does not come into contact with the skull, and vibrates far less than, say, their human counterpart. But there’s more. In an article from the Independent, research was conducted by Chinese scientists in to how Great spotted woodpeckers do not damage their brains.
It turns out there are several complex morphological features that combine to create a shock absorber, including a flexible bone structure located between the beak and the skull. As a consequence of this research, it has been suggested that this natural design feature could be used to develop protective headgear in the future.