I have space issues so my birds in the second and third hatch of the year have to go through a rapid integration process. I keep them in tractors until they are the same size as the adults. Then one morning after I let the adults out of their shelter I close it and bring the new kids in. They have the day to get acquainted through the wire. Then when it's bedtime I open the chicken door and the older birds come in. Every now and again a new one will escape. So far, there has been little fighting and integration issues. It can be very stressful to watch but as long as blood isn't being drawn, they'll work it out. If you do have a bully, best to put the bully in time out.
When I brought out my first batch of RIW birds, I put them in their new shelter for a few days. My older Dels were all kinds of curious, when I opened the door and let the RIWs out, it was crazy. The RIWs had already established their pecking order, so the head cockerel immediately went after the head cockerel from the dels. The hens did the same. No blood but lots of chest bumping and feather pulling. I sat out there watching for probably two hours. Meanwhile a couple of the girls not interested in fighting decided they should perch on my shoulders and in my lap. After two hours and no blood, I went back to the house. The head RIW became the new leader of the flock and the head del hen retained her station in life. It took them a few days to work it all out but then there was peace in the pasture once again.
X2
