took me entirely too long to figure out how to hinge the jaw properly and make it both work and look right.
I have never attempted a solid hollow frame like this before that sits above my head, and this is only the second time I have made a beak (thrid bird but the owl had a very simple beak)

A strap runs from the back of the head, to a loop on my belt, to my thumb, so when I lift that arm (wing) the mouth lifts open from above, the bottom jaw stays put.