I am trying to figure out the genotypes of my Orpingtons.
I hatched a number of Buff Orps from purchased hatching eggs.
They are a few weeks old and something interesting has become evident. All the females are solid buff. Of the males, a few are buff and some are showing buff barring. Instantly I thought of lemon cuckoo parentage.
When I inquired, the breeder said that a few of the hens may carry the lemon cuckoo gene.
Now, from my knowledge of chicken genetics, a hen can't carry the barring gene without showing it. I may be wrong if lemon cuckoo works differently.
I thought roosters were ZZ and hens ZW. The barring gene is on the Z. Roosters can be single or double barred (B/b+ or B/B?). Hens are either B or b+.
So if all the breeder's flock were solid buff and showed no barring, how did I get lemon cuckoo cockerels?
The only thing that makes sense to me is that the rooster is single barred. But then I should have some lemon cuckoo hens as well, and the breeder would know if the rooster was barred or not.
Can someone correct whatever I have wrong here? I am hoping to figure out the genetics of my buff pullets, buff cockerels, and lemon cuckoo cockerels.