So my chicken Claire (the one that was sick last spring) hadn't been doing well these past few days. Her bum had grown huge, to the point where she could hardly walk. I thought maybe she was egg bound, but it seemed to big to be just an egg. We called the vet and they said they could see her, so we brought her in. He seemed very concerned and decided to do an ultrasound. Turned out she had a tumor the size of a tennis ball. She had always been so sweet and healthy so this was a big surprise. He thought it had to be growing for a while - possibly since she got sick. We had to put her down, and it was very sad - she has always been my favorite.