The flock was 1 red NN roo, 1 Partridge Cochin roo, and 1 bantam(looked like sebright) roo over 2 black NN hens, 2 Cochin hens, and 2 bantam (sebright) hens. I got non NN from the 1bantam egg and the 1 Cochin egg. These two NN came from the 2 black NN hens.Chick 2 has a very small single comb possibly pea comb.Good guesses. The first chick is pure for naked neck so both parents had to have naked necks. If those were the only two naked necks in the flock, no question about this one. But- what kind of comb does it have also the NN in the flock?