I bought 3 new chickens yesterday. Since I didn't have anywhere else to put them, I just put them in with the other chickens. The other chickens were in the run, so I put these in the coop. I got two RIRs and a Buff Orpington to add to my flock (1 black australorpe, 1 RIR and 9 gold sex link). I assumed some pestering and it happened. My question, though, is how long til things calm down? I figured 2-3 days. The old chickens leave the newbies alone until someone notices them. Then they all have to take a run at the new guys. Everything calms down for an hour or so and repeat.