My 3 year old ex-battery hen is tired and not eating much. She is doing small green poops and sometimes yellow watery ones. She laid two very large long eggs in 3 days about a month ago but none since. She has not moulted since before I had her so I am wondering if she is going into a slow moult or if she is really sick. She was wormed 2 months ago. She will eat a little layers mash when she feels like it but is not enthusiastic about treats. Her abdomen is not swollen and her crop is mostly empty. There is no nasty smell about her. Her comb is a little blue towards the back due to her age. Any suggestions as to what is wrong would be appreciated.