Chicken Sexing - Hen or Rooster? (Part 2 of chicken sexing series)

I feather sexed these chickens when they first hatched (video: • Feather Sexing Day Old... ) and predicted that I have a boy chick and two girl chicks. Now, they are pullets and I'm checking on my feather sexing accuracy by looking at tail feather development and comb development. Spoiler, it still looks like I have two girls and a boy!
You can read Karen's blog post here: www.theartofdo... She also has some other great stuff on chickens, like how to ferment their food (which I now do regularly!).
To be super clear, this is not perfect. At best I am still making an educated guess re: chicken sex. But, it's a whole lot more accurate than the 'hat trick'! (That's where you throw a hat among the chickens and see which ones run away (hens) and which ones stare at the hat (roosters). It doesn't work at all, from what I've read (and also from my experience).