Just a curiosity here. Our new flock leader is TJ. He's 4 1/2 months old. He's doing all his rooster duties, including mating the hens. He's not obsessive about mating, he just gets the job done. The only hen TJ is obsessive about is Doe, a SF that is my best broody. She is in isolation right now due to an injury. When we take her outside each day for some exercise and fresh air, TJ makes a beeline for her. He gets all frantic about trying to mate her (which we are not allowing, due to her injury). DH's hypothesis is that Doe is the most submissive of the hens. My hypothesis is that TJ knows that Doe is a good broody and will or could provide him with lots of offspring. What do you think?