I have 8 chicks in my brooder. They are about 2 weeks old. We have two polish, one mottled houdan, one brown leghorn, one black austerlope, two barred rocks, and one black sexlink. A few of them like to get up higher (on the cardboard box, or feeder) and then jump on the rest of the "flock." Is this a sign that we may have a roo or two on our hands? Only the polish and houdan were marked as straight run and they aren't the "agressive" ones. I really don't want to have to get rid of any because they end up as roos. Thanks for any advice!