For the past two days I have noticed my hen hanging out in one of the nesting boxes. At first I just thought she was laying an egg. The next time I saw her there I thought maybe she was following our broodies lead as she was sitting on a small clutch that hadn't been collected yet. She'd been eating and drinking as usual but I did notice yesterday that she was picking out and eating just the oyster shell out of her feed, though they do have a separate bowl of free choice. When I locked the coop up last night she was in the nesting box again. Upon opening the coop today I found her standing under the roost puffed up, eyes closed, comb wilted/droopy and tail pumping up and down. I picked her up and found her feet were ice cold as were her comb/wattles and her crop large and squishy. I also noticed a dark green gel-like dropping that I'm sure was hers. At present she is in the house and is not eating or drinking although her feet have warmed up some. She is not looking good at all and hasn't moved since bringing her in. Any help would be greatly appreciated as DH is out of town and DD has special events today. Thank you in advance!