My Isa brown has become very sickly. Not as energetic as the others, looks sleepy, laying down and comb is dull. She now has common black ants crawling around her bum. I'm assuming this is causing her discomfort, and not making her feel any better. How do I get rid of the ants and help her back to good health? Otherwise I think she might be getting old and would like to make her last bit of time more comfortable?