Is it unusual for a 4 1/2 month old rooster to be trying to breed all the hens? He started trying to breed his "sister" (Not related but hatched on the same day and raised together by my broody hen.) He tried to jump on the 2 oldest hens, but they let him have it! He still tries to sneak up on them, but they just give him a look and he walks away. But the other hen will let him mount her once in a while, then when he jumps off, she chases him across the yard! (I've now nick named her Black Widow! LOL!) But he really bugs his poor little sister! She wants to hang out with him, but when she sees that look in his eye she runs under a bush. When he does jump on her, he's so big he flattens her out and she squawks and tries to run.
Anyhow, will this "breeding" behavior calm down as he gets older or will he get worse? His constant chasing her down and trying to breed her has really made her jumpy and stressed. I'm even thinking of getting rid of him as he keeps stressing the hens with his breeding behavior. He has started crowing. But still has been really good around my mother and I. He eats out of our hands. And will hang out with us when we are in the yard. I've noticed too, that he seems to be herding the hens.