I have a sick Polish hen, she is around 5 months old now, about 2 weeks ago now she started to stumble and was walking like she was drunk, then just standing in the corner all hunched over, I separated her put her in a crate in the house with vita/electrolyte mix and did a round of oxytetracycline, she perked back up and seemed fine, so I put her back with the flock after a week and the first six hours with them she was staggering and drunk again and hunched, I have separated her again and she again seems fine alone in the crate...now in the shed, I have no idea what she has, I called the vet they have no idea, they are not farm vets mind you, I don't want to put her back again if she's just going to get sick again I'm worried she might not pull through a third time if I haven't actually discovered the cause of her illness.