My pullet had been very quiet for about a week (feathers puffed up, not coming down from perch normally, not eating much) and about three days ago when she flew down from her perch, she just stumbled around and couldn't walk properly. Her eyelids also looked a bit swollen. So we took her inside the barn, and a day or two later we saw that her legs would slide forward out from underneath her and she'd tip over. Then she would flap around trying to straighten up again until she would finally give up. She can't stand up at all now. We've wrapped her up so that her legs stay under her and she'll be a bit more comfortable. We are still feeding her as usual: cracked corn, layer pellets, scratch, tiny bits of chick started feed (it seems to be easier for her to eat) and treats (bread, spagetti, ect.). She has no trouble eating, but she is barely drinking. Her poo is normal as well. I don't know if this has anything to do with it, but she may also be missing her best friend, who disappeared around the time this all started. Does anyone know what she might have, and if we should consider putting her down?