Really not sure but momma was an the heavy side, I wanna say something like oriental she'd scrap with sister over the nest box sometimes you could hear Thuds, maybe shamo but I'd be speculating.
Born out blackwing shubin hatch with 1 my greys or yellahs point being he has black wings like dad just a brisk 8-9 pounder defiantly needs exercise. Hatched out 1 of his youngins regular size a good deal faster than dad.
I think I had 1 of those from shubin. 1 of my non game blacks got out and made him kick the fence,. I'm still angry about that 🤬. Needless to say heavy hitters and fence has no give🙊🙉🙈. But I have his son yellow hackles black wings. He Broke both spurs off 1 didn't grow back. Equally heavy...