I have five silkie bantams and one Plymouth rock hen that is around 4 years old. I just got the silkies in July and they started laying eggs in about December. None of them have had any problems but now one of them (that shows all the signs of a rooster) is sitting in the nesting box acting like a broody hen. On top of that, when I bring it down into the run, it starts to fight with one of the other silkies and the Plymouth rock pecks at her and chases her away. I am about as confused as you can be, can someone help???