Somehow as a first time chicken owner I ended up with 11/11 hens, while every time my sister buys four or five for her flock, she ends up with at least one rooster. Now that I live out of town and can keep a rooster, she is wanting to give me her latest suspect. Does this look like a 15 or 16 week old Americana roo? Any tips for integrating him into my flock of 20-week-old pullets?