Snap Judgment #14: Will Headbang for Food
#437: The woodpecker can hammer wood up to 16 times per second
So this one isn't as crazy insofar as checking true vs. false, because it's pretty easily verifiable; however, that isn't why I gravitated towards it. Reason 1: I really wanted to make a Woody Woodpecker reference, as seen above. Reason 2: Woodpeckers are really cool and I was kind of curious how they don't damage their brain (and general face area). Turns out, it was really interesting!
According to Gizmodo, woodpeckers basically have giant sponge heads. The beat, their muscles, their bones, even a third inner eyelid - all these contribute to shock absorption (combined with the angle, or lack thereof, of their strikes). Because they can absorb it without damage, "a male woodpecker will peck between 500-600 times a day, 18-22 times per second — twice that during courtship season — with deceleration forces of about 1200 g." The deceleration is another key component here as it makes it so the energy from the impact is released over a longer period of time. There are all sorts of industry and safety applications from this research, from potential redesigns of football helmets to shielding spacecraft from orbital debris or other possible impacts.
According to Mental Floss, 99.7% of the impact is absorbed by the woodpecker's body, with the remaining .03% impacting the brain in the form of heat energy. The prevailing theory is that they deal with it via short breaks - hence why you don't hear them go consistently for long durations. They take a break, let the brain cool down, then get back to smashing their face in to find food, to build a nest, to attract a mate, or even to simply mark their territory. They also slightly shift the impact point between brain and skull as they work while maintaining the linear striking motion, so the angle is maintained but they don't keep striking the same spots over and over again.
Basically, woodpeckers are the best metal heads (you knew this was coming). They can thrash around for hours a day and keep on truckin'. They're basically concussion-proofed birds, so as we mentioned earlier, the scientific research opportunities are pretty substantial.