Not sure where to ask this, so thought I'd try here. When I start my new flock at my farm, I was thinking of having a few different breeds in there to vary the color of my eggs. I will not be separating every breed, however, so the problem arises of the breeds mixing as they will be free ranging most of the time. I'm entirely ok with that, but my question is this..... after a generation or two, will all the colors of my eggs just become one muddy mess or will some funky mutt still produce a shiny blue, dark brown, or whatever egg? I read that the dark brown egg gene of Cuckoo Marans is recessive, so if they mix, that gene will disappear. I'm mostly concerned with keeping a closed flock and the health of the birds regardless of the colors of the eggs, but I would like to be able to insert a couple contrasting eggs in my customer's cartons so they never know what they're getting. I was thinking of a few Black Australorps and a few RIR's for brown eggs, some White Leghorns for whites and to hopefully breed in the positive characteristics of those birds, some Marans for the dark brown eggs, some Cream Legbars for blue eggs, and an EE or whatever I can find to try to get some greens in there. I was going to order all pullets, and order maybe 2 or 3 Black Australorp roosters to "do the deed". Oh yeah, I was going to throw in 3 Buff Orpingtons for their broodiness to hatch eggs for me on occasion. Short of a predator getting in and wiping *everything* out, or some avian disease, I was hoping to raise offspring as birds get older, have weaker characteristics and have to be culled, or whatever and not have to introduce new birds in there. I've currently got 6 Golden Sex Links at my house, I'll have some of the birds in a chicken coop on my farm with a large fenced free range area and the remainder in a Geoff Lawton "chicken tractor on steroids" moving around fertilizing my fields. So they'll be spread into 3 different "groups" for bio security as long as I do my part in cleaning myself between groups. Just playing with some ideas. I'll be raising a few ducks, turkeys and geese as well, but I'll try to figure out where to keep them after I figure out what to do with my chicken situation. Right now, I'm just trying to plan my farm, what various types of housing I'll need and where to build such housing on the farm as I find good spots and clear out trees and underbrush.