Sorry, not the best picture. I had two of these hens, and the neighbor's dog killed one and injured the other. I can't seem to find any like them on the internet. I would love to get some more of them.
Well, thinking about it, I guess dark Cornish were also called Indian Jungle fowl, so that's probably it. I just don't think of them when someone says jungle fowl.
They may be some sort of cross, as they are more slender, and longer legged than the pictures of the Dark Cornish. They are colored similarly though. They are very fast and athletic hens.