The vet says she has a Yeast infection and a 'regular' one. She's kept inside at my boyfriends house, she's kind of handicapped, has seizures and her neck curls all the way around, we call it an "armadillo" Anyways how could she get something like this. I dont like per present living conditions.. She has FREE RUN of their small apartment, towels on the floor to poop on cleaned once every 2 days(bad) or his mom who is handicapped just puts another towel over it. She also has been around the bottom of a dirty, uncleaned area below our Green condor's cage. is disgusting and yeah What can cause yeast infections in a duck??