Hi,
thanks for replying.
I will now go into more detail about this chicken, in case you can help me please.
The chicken in question was in perfect health until late last year, when she moulted.
Then she started to eat the new feathers despite all efforts to spray her to try and stop it.
Everything I spray on her, and I have tried almost every product on the market, just gets preened off.
Despite now being almost half naked, she was fine until last week - eating OK, laying OK eating grass etc.
But, last week, she suddenly stopped taking an interest in things and stopped laying .
When I open the door of the run, the other chickens all come flying out, but she just stays there as if huddled up.
Looks-wise, her remaining feathers are healthy looking. She will eat if I put food in front of her. Her comb is still a good red colour, so I am not sure why she is like this.
A vet examined her for mites and that was negative.
I thought the fact I saw her leg trembling might be an indication to what is actually wrong apart from the feather loss.
I am not sure if she is now actully moulting, but without her full set of feathers, it is difficult to tell.
I hope I have given you enough information and hope someone can tell me why she is like the way she is.