I have a two year old barred rock who's crown started fading in color a few weeks ago. That was the first sign of trouble but she was still acting normally and laying. This weekend she is getting really lethargic. She sits a lot and isn't interested in food. She looks like she is losing weight and is getting weaker I haven't seen her lay in a week or so. No one is picking on her and she has space to be by herself. I haven't de-wormed them and assume that could be an issue. What are the recommended de-worming treatments? The rest of the flock looks great. Any suggestions for either a good vet or treatments would be greatly appreciated. Thanks