This is my first year with chickens. I have a flock of 10 - 3 pullet leghorns, 4 ISA Browns, 2 likely Saphire Gems, and a likely Saphire Gem cockerel. They are all about the same age at just about 16 weeks. The girls haven't started laying yet. Roo has been trying to mount the girls but they are not into it. Most of them just run away and one of my girls will tell him off in no uncertain terms. Although they are all about the same age, they are all in different stages of development with some appearing closer to maturity than others. Today, one of my ISA Browns let him mount her but she hasn't started laying yet. He wasn't overly aggressive with her or anything, so I'm not worried about pecking injuries. Assuming that the girls will handle him themselves and if he is annoying them they will tell him??