Mix vinegar (12 fl. oz.) and baking soda (2 lbs.) and soak the quills
thoroughly. They are made of calcium and will be softened quickly
by the soaking. Break or cut the ends off (to release the core
pressure inside the hollow quill, and they will come out very easily.
Consider taking a small squeeze-bottle of this solution
with you hunting, for immediate use if your little darling gets into a
quillpig. It's shelf life may be only a few days, though.