Hi, One of my chickens (about three and a half, ex battery hens) is really out of sorts. She's seemed a bit under the weather for the past couple of days, and both chickens haven't laid these past few days either. The one I'm worried about is spending most of her time standing hunched over in the coop, legs slightly splayed. She's eating and drinking, but barely moving and has gone really quiet. Today she absolutely refused to come out the coop, and yesterday she dashed back into the coop almost as soon as she came out of it, whereas normally they are both desperate to go outside as soon as they catch sight of us. Both chickens have had diarrhoea for the past few days and tail feathers are looking worse for wear because of this. Could worms be causing this?