cherrynberry
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Have you asked nicalandia about it?I've figured out a way actually. I've done so with purebred Sumatras, Silkies, & Buff Orpingtons.
If I remember to, I'll be making an article on my way of identifying the different sex pattern in the growth rate of feathers.
I know that you have found a way to do it, but do you have anything to prove it? What would cause it, genetically speaking??