I have had two hens mothering the same chicks for about 5weeks( both broody's hatched at the same time) to night the alpha hen( at least I thought she was) went back into the big coop and the other hen took over the 6 chicks. My EE seemed to have the most control over the brood, she clucked all the time to the chicks tried to cover all the babes and push out the Sussex. Some times the poor sussex would be throwing out food and looked around and the chicks were all over by the EE. I knew she was about ready to go back cause she started to bring them to the big coop for a look see about a week ago, but I sure was surprised tonight when I went to close the coop door and close down the tractors; and found just the Sussex with the chicks and the EE in the big coop . Didn't think she would just leave and not take them with her she was very protective up to know. I bet Sassy the Sussex is very happy to have them all to her self.