Actually there are 4 species of jungle fowl and chickens are either red jungle fowl or possibly reds with a very small percentage of grey in them. The 4 species are:
Gallus gallus, the red jungle fowl (and all domestic chickens)
Gallus sonneratti, the grey jungle fowl
Gallus varius, the green jungle fowl
Gallus lafayeti, the Sri Lanka jungle fowl
I have greys and greens but I have not been successful at breeding the greens yet. There may be several reasons, first it gets cold where I live and green jungle fowl are very intolerant of cold temps (I heat their pen all winter long), there is a lot of activity around the pens and they are very shy birds, also they are just over 2 years old, green jungle fowl need more time to mature then the other species.
The grey jungle fowl I have are great quality, I have 3 pairs, one from a fantastic breeder and have pedigree back to wild imported birds and the other 2 are F1's (all 4 parent birds were wild caught). I got my first eggs of the season two days ago, I know this is way early, but because of the green jungle fowl needing heat the pen with the greys stays warm as well and I think I am confusing them with the warm December we are having and the extra heat. Normally I sell the eggs for $60 each, last year I had way more requests then eggs and a good hatch rate. It is the first time I have ever had 100% hatch on the eggs I kept, I always check fertility and hatch some birds for future breeders and to sell. I kept 8 eggs from the grey jungle fowl hoping to get 5 or 6 to hatch, not only did all of them hatch but it ended up being 4 roosters and 4 hens. My perfect season!