I have a hen that is three or four years old at least. I got her when she was grown, so I'm not sure about her age. She seemed to be egg-bound at first, or at least I thought she was. When I decided to give her a warm bath, I noticed that she seems to be gasping for air when she breaths. She is opening her beak and stretching her neck. I separated her in a crate and gave her food with calcium and water, but she doesn't seem to be eating or drinking anything. I'm beginning to wonder if she is just old and dying. I'm also beginning to wish that I knew how to put her out of her misery if I can't make her better. I first noticed her symptoms a couple of days ago, she just seemed lethargic: wasn't scratching for food or jumping up on the roost. Any advice on what to do will be greatly appreciated!