These slatebelt monsters come from Wilds of Pa here on BYC. or Hink-jc Mountain Poultry at this link. These are really big birds. The thing you have to remember is, you cant' just keep everything and breed it and expect it to keep its size. Like chickens, you have to save the best and eat the rest. Only breed the biggest. I think that is what has happened when you get those smaller GG and Butlers. My GGs are not mature yet, but they don't look like they are going to get as big as the slatebelt monsters.
http://www.hinkjcpoultry.com/bobwhite.htm
http://www.hinkjcpoultry.com/bobwhite.htm
