hello, I am new to backyard chickens and I'm sorry if I posted this in the wrong forum. I have different mix breeds of chickens in my flock so I know which one layed which egg and I am noticing that one of my hen, (she is at the top of the pecking order) whenever I checked for fertility in the eggs, hers was not fertilized but my other eggs were. When I came to clean the coop in the morning I saw that my rooster was trying to breed with her, holding onto her neck. But she resisted, pecked, and attacked him. After that he stopped trying and ran away. This happened everyday. Anyone know how to stop her from being too agressive? Also he is bigger than the hen.