My 2 1/2-year-old hen has become lame overnight. I noticed her acting a little lethargic while putting them up for the evening so brought her in to do a thorough check. She has had Bumblefoot that is being treated, but has not gotten worse. I wondered if she was egg bound so gave her an Epsom soak, dried her off and kept her inside in the pet carrier for the night. While being dried off, she was standing and putting weight on her feet. In the morning, she would no longer stand on her feet and was laying with them curled under her. This was on Friday and it is now Monday. Condition has not changed. She does still eat and drink, but food must be right in front of her because she is not mobile. I have given her more Epsom soaks, but nothing seems to be changing. Any advice? None of the other chickens in the flock are showing signs or symptoms of illness.