Egg Snatcher
Free Ranging
Ok! Thanks!You’d have to keep breeding until you think you have enough of a population without the mottling gene. Then take each of your breeders and cross them with a mottled chicken to see if they’re carriers. Right now you know all your breeders are carriers, so doing that wouldn’t help, but in the future you should be able to do some test-breeding to make sure the mottling is gone.