Watch how a severed foot moves like a marionette puppet when chicken foot tendons get pulled on. Although this video may make you squirm in your seat, it's a way to learn about how the different parts of a chicken foot work together to make it move.
If you're about to cook a chicken and you have the foot available to experiment with, you can try this at home. It reminds me of a natural version of one of those grabby sticks that people use to reach high-up objects. I wonder if the chicken foot could be used to pick something small up?
Previously: Birds Aren't Real