4 yr old SLW. Her comb and wattles started looking pale a few days ago. Now for the past two days, she has been puffed up like a ball, often her eyes are closed, and she isn't moving around very much. I don't think she has laid an egg in the last two years, I have kept her around because she has always been sweet. Is this old age setting in? Anything I should be doing to help her? Or do I do the merciful thing and help,her say good bye?