We have six pet ducks and they all seem fine except for our Pekin, Jax. It started with her limping a little bit but when we checked her for injuries we couldn't see any. She lost a lot of weight but she was laying eggs and sitting on them so we thought that it was normal. We have since changed their food to a high protein one and she is back to her normal weight but she is still limping and her legs feel a tad hotter than the legs of the other ducks. She is also laying down a lot and panting slightly. Also she lost feathers on her wings which are a bit bony. I try to place her on the water twice a day so that it cools it off and takes the weight off but i dont know what else to do. What should I do to cure her? Should I give her antibiotics or sulfur? She is my baby and I don't want to loose her! Thank you.