I have 17 12-week old birds and I would like to "get-rid" of the males before their meat gets too tough. There are two that have shown definite signs of being males but the rest I am not sure. I hatched them from my own eggs so I will likely have more males. They all look very similar so I cant really do the whole "Guess the sex by the photo" game. Is there any way I can tell by picking them up and looking at them? I have looked in books and online and cant find any tips. I really dont want to wait until I have 10 crowing birds to know whether or not they are males. Any advice?