I am new and have 15 young guineas myself. Could this be a slate colored one? I really don't know as I am learning. But thats my idea, which I am probably wrong.
It's a slate guinea. I have a whole flock try crossing it to a lavender pied
Interesting cross in colors I did it as a project and am currently watching my keets develop. The color is much like a citron color and keets look to be developing the pearling and pied.