Chicken (and I presume avian, in general) inbreeding is not exactly the same as mammalian inbreeding. It will take you many generations to notice the first signs of inbreeding, one of the first simply being lower fertility. Crossing offspring to father once should not be too bad. Dolly Parton has a little tuft on her neck I believe. That means she is heterozygous NN, in other words, only carries one copy of the NN gene. If you breed her to any bird that does not express the NN gene, 50% of the chicks should be heterozygous NN (my math may be off, it is very early). Out of those babies, you pick the ones expressing the NN gene to their father, which would give you the same, as far as the NN gene goes. If you are looking to breed Dolly Parton with a silkie to get the silkie feathering, then that gene is recessive. Meaning, you have carry two copies of the gene to show it. Since Dolly Parton is normally feathered, we cannot know if she is carrying one copy of the silkied feather gene. If she is, then you should have some silkie feathered babies when you cross her to a pure silkie, expressing the feather gene. If she does not carry the gene at all, breeding her to a homozygous bird would give you offspring that carry the gene. Breeding them back to their father would express it
Either way! Enjoy this cute little teeny first egg.
