I have a peking duck who is about 3. She has always walked with her feet turned in, but for a few months now is walking like a t-rex. Her knees are swollen and she tires easily so stops to rest often. She eats and drinks just fine. When she lays down her legs are kind of out to side. We think it's gout. She seems to get worse in the heat so we brought her in to live in the house and she seems to be better in here. Oh and she molts way more than the others so her egg production is way down. Any ideas?