I had 7 NN Frizzle eggs. 4 hatched and are well, one did not make it. anyway...out of the five there were 2 nn solid black chicks and 3 black/yellow with white spots on heads and feathers on their necks. Flock consisted of a Barred frizzle roo and nn rir and nn black sex link hens. So these chicks can't be sex link can they?
