I have a chicken black and white that is now limping. She has a green line in the higher part of her leg. I know the perch is too high and needs to be lowered does this mean she has hurt it? Does the green mean its bruised or broken? I noticed and have to look again that a couple of my chickens also looks like the toes are turning black is this normal? Please I need help, Nancy I don't have a way to post pictures very well on the internet.