I agree! I honestly didn't believe it and went to check to see wattle growth. It's fascinating but I can't get her still enough to take pictures. The funny thing was that she used to be the hen that was always getting picked on by others. But unfortunately her entire life she had problems laying...
that's what I thought too, but plenty of research online indicated that yes. It's rare, something along the lines of 1 in 10,000 chickens. It happens when their only ovary is damaged/stops working. They get the appearance of the rooster but are still biologically hens.
I currently have 9 Easter eggers that are a little over 3 years old, among them a hen named "Z," who has been having difficulty laying eggs with fragile shells or no shells at all. Recently, I've noticed that Z is developing waddles, which could be a sign of transitioning into a rooster...