Jungle Fowl are lovely chickens and unfortunately I only have two roosters at the moment (Red and Yellow). At one time I had a little flock of them but they started to travel. Next think I knew they were foraging across the street, and begging for potato chips at the next-door gas station. These birds are also excellent fliers. My yellow rooster Berry enjoys sleeping high up in the trees. So if you plan on keeping these birds fenced your going to need a roof.
The hens are poor layers of tiny cream-colored eggs. They do however make great mommies. Most of my hens would attempt to hatch out a batch of chicks every year. The hens are also fighters. They will shortly become the dominant birds in your flock. Most of my jungle fowl hens were shy of people, and rather noisy.
The roosters are known to be very pretty not to mention violent. My boys have always proven to be gorgeous. As for the fighting they do fight, but I really havent had that many problems. But, I am always there for introductions and fighting isnt tolerated. I have had some very friendly roosters of this breed, but they were only fond of me. Everyone else they wouldnt approach. These roosters do get frostbitten pretty easily so if it gets cold put some Vaseline on their combs/wattles. Also, I have noticed that when breed to other breeds the roosters that hatched became extremely violent towards people and other birds. Im not sure why that happened.
As for size I never recorded it, but they should be around 1 ½ - 2 pounds, while a Leghorn should be 4-5 pounds.
Breeds sort of like them, Kraienkoppe, Orientails, Modern Game Fowl, Old English Bantams, and there are others as well.
Overall these birds have proven to be full of personality, good foragers, and very hardy.
Hope this helps,
Jamie