Hi! My six year old hen, Violet, has been sick for a while now, but it has been very gradual. About two months ago she started pulling her head in and being a bit less active. I thought she was having difficulty breathing because her tail bobbed up and down when she was roosting, but after treating her for respiratory illnesses, she was still sick. It's recently got worse. Her crop feels very empty, so I don't think that she's eating, and she seems to have trouble keeping her balance. She is constantly pulling her head in or tucking her tail down. What could I do to help her? Thank you so much for any advice!