i am also interested in this question ... slightly different scenario:
We purchased 3 "hens" in February. Speckles (ameraucana) turned out to be a rooster, and we gave him away on Sunday. Esther (cochin) laid her first egg today!! Apparently, she is a bantam. Sigh. Now, we are one hen short and half the eggs will be smaller than we expected. (our third chicken is a silkie ameraucana)
This is not what we were wanting when we started this adventure.
So, here's the situation: we found out that our feed store can "order" a hen from their suppliers. From what I gathered, we can request a breed, if it's available. We would like an astralorp or a Rhode Island Red. We really want a hen that is of laying age now or very soon. ((We are also raising 7 baby chicks for a friend, with the intention of keeping 2, but they are a long way from laying ... only about 5 weeks old now.))
Any tips on introducing new hens? Any experience with quarantine? Right now, i think the quarantine is going to be my biggest problem. I just gave away our dog crate, and the chicks are living in the only other big cage we have. I read the tips on quarantine - a MONTH ????
Our coop has a fully enclosed run that is about 6x16' and a roosting house that is about 6x8'. They free range most of the time, in addition - but there are days when they stay in the run.
thanks
--janis,etc