I have an 8 month old light brahma that has been limping for about 2 weeks now. She's still eating and seems to be laying as usual but she's limping, her tail is down and her comb seems to be fading in color some. Checked her out when we first noticed the limping. Cant see anything wrong with her leg or toes. Gave her a warm foot bath and cleaned up her feathers and she seemed to be limping less but has since started up again. These are my first chickens and I'm not sure what I should do for her. Any help?????