My 2yr white face pearl is completely pearled but has no barring on the tail feathers. I have read many times that females keep their pearling and males lose it, but may retain a little around their neck. Her whole back/wings/chest are pearled so why does my bird not have barring on her tail?? Are tail feathers irrelevant in this mutation? I've also seen another pearl with no barring, so I'm just confused. I also have a juvenile pearl (unrelated) and when it molts will it be 100% to tell the sex by either keeping or losing the pearl pattern?