Okay - I know this has been asked before, and I have read 60+ pages to try to resolve this. I had 2 Barred Rocks about 2 yo & 4 teenagers (3 RIRs & a Brown Leghorn) born early May & raised from chicks. The teens were producing about 3-4 eggs a day in a chicken tractor, the ladies about 1-2 or less a day. The tractor was getting too small as they grew, so I integrated them by letting them free range much of the day, then re-modeled the 12 x 15' pen with 5 laying boxes and 2 roosts. Then, I put them together. The 2nd in command has become very mean to the teenagers - cruel at times especially where food & treats are concerned, so I took her out and put her in the tractor in viewing distance of the others 2 days ago. All the others seem to be 'missing' her and their egg production has ceased, except for her, and the meanest of the teen-agers. But that had already happened when I mixed the flocks. What in the world? I'm thinking of leaving her in the tractor to watch the others get treats & she doesn't - but not sure if that will do the trick or not. What if I left all of them in their 'present homes' for awhile - then maybe they will get to be family when re-mixed? The meanest one just cries & paces all day - probably missing pecking the tar out of the others all the time. The others, even the ones she is cruel to are also crying. I don't get it. Any relevant info would help. They were mixed for 3 weeks before I felt it necessary to take the meanest one out.