My star and comet combs have 1 vcomb gene and small crests. Ive noticed my pullet has high nostrils, but my cockerels don'tWhat do you mean by this?
Chickens with 5 toes have been around for at least two thousand years, so I've always assumed it was a mutation that occurred naturally, and people chose to breed the ones that had that mutation. So it would have been preserved and spread by people, but not created by any human intervention.
I've read that those nostrils are caused by the v-comb gene, not by the crest gene.
The breed called La Fleche has a v-comb and big nostrils, but no crest.
Cream Legbars have crest (a small one) and a single comb, with normal nostrils.