He's so handsome! I love how much color he has! My Bielefelder has similar issues, lol. I did finally hear him crow yesterday, so :fl! His crow was definitely a change of pace from the squeaky little bantam crows I'm used to.
I'm with @Alexandra33, I would guess slow maturing cockerel. The leg size, comb & wattle development, and lack of a tail make me think cockerel.
My understanding is that you have to keep breeding back to Black Orps to fix the feather quality.
I want to say it was right at 65%! A couple have started laying so far! I should have kept them separate because I can't tell them apart now. I just have quail, but I had a very positive experience. She packages really well and is super easy to deal with.
These are the blue eggs and standard Coturnix eggs I purchased from them. If I understand correctly she selectively bred her regular Coturnix overtime to get her blue eggs layers. The photo she shows on this page is the progression I believe.
https://www.alchemistfarm.com/alchemist-blue-quail/
Will the top part with the holes pop off the one you already have? I did that with mine until they were big enough to use it with the guard, I just put it back on when they got big enough to start making a mess.