I have a six mth old hen who has come on sick, she is very slow moving and seems weak. she is not being bullied by her sisters and is still eating and drinking though without much vigor. I suspected egg binding and treated her with heat and a warm soapy water enema, no better no worse. her eyes are bright and clear and her comb is perky but I worry she is suffering and don't want that. any help would be great. thank you.