I went out to my cage this morning to see if I had any eggs from my three grown hens. My Buff Orp rooster was sitting on two eggs and was puffed up and growling at me and pecking at the hen trying to get into the nest. He did come out when I put out the food. I have never seen such madness. The ways of the chicken just baffles me at times. If only I could train the roosters to be my incubators hehe. If he does it again I'll try to get a picture. Any of you pros ever seen this behavior?