We are looking to ramp up our egg sales. I'd rather stay with heritage birds rather than ISA browns if possible. We have had great luck with our girls. But I would like larger eggs and larger quantity. If I were to go with heritage breeds which ones would give large eggs and larger production? Or should I just stick with production breeds like ISA browns? ETA: We currently have a mix of Chanticler, Ameracaunas, Orpingtons and some mixed breeds in our flock. They are so nice and calm, but as now they're getting up there in age and production is going down. I'm curious if there are similar breeds that would give large eggs and large production similar to the output of ISA browns. I just really like the dispositions of what I would consider Heritage breed birds. Breeds I'm considering Ameracaunas, Australorp. I'm not against ISA browns. I would like a nice docile coop if possible.