We currently have about 2 dozen various breed Teenagers EE, RIR,Blue Orp and cochin- about 8 weeks old in the same pen. We have been observing them since they hatched and are wondering: Can we really tell the roos from the pullets by watching the roos face-off one another? We picked the RIRs for pullets from the store on the basis of the roo chicks challenging our hands, and so far they still seem pullets. Do some of you use this method? How accurate are you?