A miniature hen of mine has begun to "lose" her scales from her feet and they seem to be getting slightly bigger. i have seen some chickens before with white, deformed-like feet due to what looks like some fungus growing on them. At first I thought she was just molting scales like chickens molt feathers, but her feet keep looking more like the fungal-footed-chickens I have seen before. What is this called? Is it contagious or genetic/hereditary? Can I use or buy anything to make her feet normal again? Thanks for the help.