I have made the mistake of giving my chickens some very premium bird seed as an extra treat. It is a patio mix and has peanut chips in it that they love. The problem I am having is one of my hens has a huge swollen crop full of seed. The vet put her on antibiotics because she had a fever and was losing weight. The medicine has done some good and the crop has become a little smaller but now I can feel the seed in there, like a big hard ball. Any suggestions? My vet doesn't know a lot about chickens.