We have a 1 year old speckled sussex who is normally pretty spunky. She has always been a little smaller than our other chickens (including another speckled sussex of the same age) but has otherwise seemed pretty normal. This morning I found her lying in the coop, not really moving around much. I brought her out and she seems weak--can stand and walk a little but has a hard time holding her wings and tail feathers up--her winds tend to flop down to the side. I have her in the house in a crate with food and water. She is eating and drinking and pooping OK and I haven't found anything physically wrong with her other than she just seems weak. Does anyone have any thoughts or suggestions? We have been pretty lucky so far with all of our girls... We'd be very sad to lose this chicken in particular as she has a great personality and is quite social!