Thanks for the research.I just googled "chickens swollen legs" and came up with a few links. Sadly most (unless it is mites) suggested the swelling is often caused by kidney/liver failure or even avian leukemia. Wish I had found something more positive. Article an avian leukemia here: http://www.countrysmallholding.com/poultry/avian_leukemia_1_3493401
Funny thing is she looks really healthy other than the legs. I did notice she has these very fine red lines going down or up the legs, looks like fine scratches. I dont think they are scratches because they havent went away. But she has no symptoms of being ill and the comb is very bright red.
Can anyone tell me if she is a girl or boy?