So first some background on this little guy - he is the offspring of my current head rooster, a Barbu D'Uccle bantam. I had him living apart with a couple of other roosters (all related) to give the girls some peace. I recently put him back into the main flock where he seemed to be doing ok. No fighting issues that I saw. He is around 9 months old. He has always been the quietest, seldom crowing and likes to be picked up. Had been eating/drinking fine. 3 days ago I found him sitting in the middle of the coop, he was quite still so I picked him. On doing so I noticed his head was leaning off to the left - almost like a wry neck, his left leg was a little flaccid, wings were fine. I have him separated in an inpromptu hospital. His eyes are bright and he can scoot around a little, both wings he can move, but the left leg is still flaccid. I have been feeding him vitamin water via syringe, I think tube feeding may be in the future. My question is - what do you thinks' wrong? I have scanned through the usual diseases and he really doesn't fit into any category. I am wondering if the large hens have pecked him on the head severely enough to cause a brain bleed? There are no signs of trauma that I can find. I am at a loss - suggestions please!