My runner has this odd green bill color that started out smaller but has always been on her bill since she was about 4 weeks old... I thought she just had dirty build-up until I realized it is appearing in spots farther down her bill and is definately a green color instead of just dark dirtyness. It is worse on the other side with spots appearing about 1/2 way down her bill. Is she diseased or does she just have a funky bill color? Will her whole bill turn green? has anybody come across this problem? She seems otherwise fine-aside from being the most stand offish and loudest quacker... Thanks guys.