Well, he is not really any better this morning. I've put him outside in the sun withe feed & water within reach, but he has not tried to get up. I will attach a pic when I go back out. I'm not sure at this point if taking him to a vet will help. I'm almost 100% sure this is a head injury.
After I put him out imagine my surprise when I heard his SISTER crowing from HER cage. Apparantly this much smaller & timid blue silkie that I thought was a pullet is in fact also a ROO.
So my guess is that the injury incurred in the same cage they have been sharing. The weird thing is that when they have been in the run with my 6 hens, they were always being chased by the hens & never seemed to bother each other.
Anyways, I'm going to wait a few days & see if he gets any better, & if not I'll have to gather the courage to cull him. Most likely I will take him to the vet to be put down.