The melanistic fawn pictures have been floating around the internet since spring and were taken around an Austin TX park by a professional photographer, and from what I gather, there is a much higher whitetail melanistic rate occurring in that area than anywhere else due to genetic isolation. Kinda like the white deer of the Seneca Army Depot in upstate NY.
I’m kind of an accumulator of weird colored deer photos and animal oddities after catching a white fawn as a kid, but aside from pictures have seen only one with the melanistic trait in the wild which was a doe a couple years or so ago. She wasn’t jet black, but she was awful dark.
Gathering quite a few photos of odd colored animals through the years and have learned it’s all about genetics.
Locally, melanistic eastern grey squirrels are quite common around here which I have a ton of in my back yard. The blacks actually dominate (I’d say probably around 3 to 1) over normal colored greys in town, but the further out of town you get, the more prevalent the greys become.
Read something that was posted a while back, (I believe by George S) that stated back in the days of early settlers when squirrel tails were exchanged for tax moneys, these squirrels were predominately black.