My other two orpingtons have a bit of fluff on their backsides that look like maybe they’ll be tail feathers in a few days? But neither of my Easter eggers have no tail fluff looking like it’s going to be tail feathers.
Mine are 6 days old. I have 5 pullets (hopefully). Only one, a buff Orpington) has tail feathers.
I’ve heard feathering out faster is usually a sign of a pullet, but most pullets don’t have tail feathers at a week old.