vibrating

Ive posted about an issue with the same chicken in my previous post but new things have become clear since. My 5 year old chicken has been losing weight and slowly moving less and less for months and months.. maybe around 6 months..and eating and drinking less until she stopped about two weeks...

I have a chick presumably 6 weeks old and a cockerel that is vibrating its tail constantly. The other suspected cockerel sharing the same space away from the adult hens is not doing this. And I'm not talking about the commonly seen wagging of the tail side to side to move body fluids from their...