She has these neck feathers that look super sophisticated. I need a close up of her but she won't let me catch her. She is faaaaast. You can probably see it in the photos. Her naked neck has a front strip of feathers going down into what I call her boa area.
Yup, that's how you can tell she's a heterozygous NN. They have this little pom at the front. Homozygous birds have a totally naked neck. I find the little poof adorable