I was thinking maybe red jungle fowl or maybe old English game? Or a mutt of the two, lol Also think she may be a bantam, she's more mature than our 15wk olds but looks about the same size.... She very well may be one of ours, we ordered 39 chickens that arrived in March, we ordered aracaunas, barred rocks, black astralorps & blue and red laced wyandottes & one 'rare'. Perhaps she was the rare and got away when we moved them to the outdoor coop. But from what I understand its an odd day to get a 'free rare' as a hen....can't seem to get a good count, they move too much. She may just have wandered up from someone else.... Thoughts??