Hello. New to this forum, just joined...and I need help. I keep chickens I have 19. One of them a sussex has developed very swollen feet. they look knobly and are also patchy white. I say her feet are comedy feet because they must be 3 times the size they should be. I also think they must be sore as she has given up scratching and walks gingerly. Has anyone any idea or seen this before?