My year old barred rock hen has been hopping around on one foot for a week. It just stays curled in a fist and just hangs there. When she hops, her leg just bobs up and down like a yo-yo. Checked on her yesterday and her foot looks bruised. Checked for black spots or cuts, but found nothing. I've searched this website, but couldn't find a picture that look like hers. She is eating, drinking, and no one is bothering her. Any thoughts???