Hi, I have 8 week old chickens (8 Australorp roos, 11 EE hens), and they were all doing great yesterday. I held a number of them for 5-10 minutes, no problems. Today, probably 6 or 7 of my EE hens have VERY bloody backs... I'm smart enough to realize that it's probably from the roos mounting the hens, because it's only the girls who have the bloody backs. But I didn't think roos had ANY interest in mounting a hen at 8 weeks old? Should I separate them? Even if I separate them, how do I get the hens from picking on each other? Any ideas? Thanks!!