sources for the post above + pic of a woodpecker
here's a good page describing woodpecker's tongue structure as well as how they can hammer into trees without breaking their own skulls - also the source of the illustrated diagram: https://www.birdwatchingdaily.com/blog/2013/12/10/woodpeckers-hammer-without-headaches/
skull photo source: https://www.researchgate.net/figure/Anatomical-structures-of-head-and-hyoid-bone-a-Great-Spotted-woodpeckers-head-b_fig8_51761092
pileated woodpecker photo source: http://justfunfacts.com/interesting-facts-about-woodpeckers/