I believe the tail puffs have to do more with their breeding and what their parents have than their sex. My boy has a lovely tail puff - he got it from his mom and dad. His sisters have them too, as well as lovely head poofs - only the males crest feathers sweep back and he has streamers, a big comb, wattles (beardless) and tree trunk legs already at 7 weeks old. No waiting to guess on that one!Here is another one of her. She doesn't have any comb of note, just a flush beak. I'm calling her "Blue" because she has the blue leg band on. LOL.
(on the far right)
I also had a couple others I was curious about that, I think are boys....
Here is Pink:
And Purple:
Pink and Purple have the biggest combs out of all of mine so far. Their tail puff have more of an.. arc shape rather than a dome shape too, if that makes a difference.
The combs - yes I would guess the other two are boys from their combs. Still not sure how old they are?
If they are all the same age I would guess Blue IS a girl - Pink and Purple are boys. I still have a 50% chance of being right...