Hi everyone! My duck Sammy, a four-year-old Pekin, has some suspicious stuff going on with his bill. He has always had a flaky bill and the vet didn't seem worried about it a few months ago. I read that some ducks just are like that. My other male's bill is fine and both birds eat Mazuri maintenance. Does he have some kind of deficiency, mite? Let me know what you guys think. Thanks!