Is the NN gene potentially lethal if you cross a NN with a NN? I ordered 8 eggs off of eBay, & she sent 15. All 15 grew embryos. 1 early quitter, 2 died just before PIP, 1 died a few days before lockdown. I hatched out 11 (1 is still incubating, about a week behind cause it was lost in our couch for awhile). The 2 that died just before PIP I egg-topsies and both were NN. The one that died a few days before was too decayed to inspect. The early quitter and the one still incubating of course I have no idea. The 11 that hatched out alive are ALL naked necks. I expected a 50/50'ish NN ratio, so this makes me wonder if the seller maybe bred NN:NN? Plus, of the 11 that hatched 4 have died within 24 hours for no apparent reason. They are also silkies if that matters. Thanks so much. I just feel bad for the ones who died.