Thank you very much for your responses. I will have a look at that information and see if I can find anything that sounds similar and I will shut her away from the others just in case.
I hope that someone can help me. My chicken is a 5 year old Magpie. For just over a week now she has had a sticky bum with greeny coloured poo stuck to it. To start with she seemed fine and I ignored it, then I noticed that she was having difficulty eating. Today she can no longer eat. She is...