I got a group of egg layers chicks and a rooster chick all together at the end of summer. They are 18 1/2 weeks now. I was up at the coop for awhile today and noticed this behavior. The rooster crows like crazy then struts around looking at all the hens...he will grab one by the neck feathers and mount her but she makes a horrible protesting noise. He did this numerous times while I was there. When I go in by them a lot of the hens run behind me and hide. I knew this was starting to happen because I could hear a commotion now and then, but I didn't realize how often this occurred . I am concerned about the health of my hens and I worry he may be more of an aggressive rooster. I also picked up a hen and she squawked and he came towards me making a bunch of noise, I worry about my son going in by him. Any thoughts?? Thanks in advance.