I have a young Barred Rock roo. He's scared of anything, especsially the dominant hens. He's grown up with this flock. He is starting to spar with the other pullets who are not laying, but he runs from the bigger hens. He's not doing anything protective, but for the last couple of days he has been being the last one in the fence. He's also started nesting at night by himself. I don't know if that's any indication of anything. My laying hend sleep up on the roost. He's between 5.5 mo and 6 mo old.