We have just finished building our enclosed run and are getting ready to get our first chickens next week. We decided to go with pullets for our first experience and bypass chick rearing until we are more familiar with the process. This late in the season it is difficult to find coop-ready birds but I have found two farms with availability. Two will be Buff Orpingtons, born April 11th (7 weeks at pick up) and two will be Golden Comets, born March 25th (10 weeks at pick up). Our run is about 8x16. Our current coop is small, about 10 square feet but we are currently building a larger coop that will be ready in a couple of weeks, before the girls reach maturity. I don't currently plan to quarantine the birds from each other. My question is can anyone tell me what I might expect bringing unfamiliar birds together at the same time, and given their respective ages? I'm thinking it would be better to have them arrive together on the same day rather than let one group establish dominance and then introduce the other but I really don't know. Any thoughts/advice are greatly appreciated.