Quote:
Melanism occurs in just about all mammals and birds and humans.
fibromelanosis seems to be specifically for birds..... there are a couple of threads here on BYC that have scientists that discuss the subject....
Images of Fibromelanosis
Some of the pictures on this link have been photo shopped.... but there are alot showing examples of different breeds of chickens that have this trait. But I understand the difference between Mealinism and Fibromelanosis is Malanism effects coat only Fibromelanosis affects the bones and muscles as well.
BTW Silkeys tend to be Fibromelanistic.
deb