Yesterday, (tooooo hot to be outside), I was watching the show, "How It's Made" and they did a thing on hatchery chicks. It showed the poor babies dropping through conveyor belts and getting tossed onto racks-sad....but not to get off topic. They showed the people sexing the chicks. They picked them up by a wing and if their wing feathers had two distinct rows of feathers they were pullets. If they had a single row of wing feathers, they were roos. Did anyone else see it? Has anyone ever heard of this sexing method?, because it looked to be fairly easy to tell the difference.