This is not a new subject but a different twist:
Cyna a blue QP, raised in a home not a breeder. I got her in late march about 4 months old. She was very, very sweet girl!! She loved me and my 2 young boys (8 &11) BUT, she grew her flight feathers and everything changed. For about a week she would attack us so.....off went the flight feathers. Now she is sometimes sweet sometimes naughty. We used to have her with us all the time when she first came home. Now I feel I can only take her out when I can pay full attention to her to train her and help her to be sweet again. Clipping her feathers really helped. I bird sat once for a bird who plucked her feathers out and I DON'T want that to happen to my girl. How long is to long for her to be on her own? Her cage is always open (she has a ladder to climb up/down) and the door is open so she could come to us if she wanted and has once or twice. I go to her cage and talk to her all the time but only have her step up whenI can focus on her. ANY thoughts would be appreciated as this is my first bird

It's OK for her to be out of her cage playing alone, in fact it's a good thing to encourage independent play. In terms of training her, is she bitey when away from the cage or is this a territory issue? I would keep up the training sessions, ignoring her will only make things worse. If you get her to step up, take her away from the cage and work with her then and see if it makes a difference.

I hope that makes some sense, I feel like I'm rambling.

Thanks for the reply!
I did rearrange and add a bunch of stuff to her cage and she LOVES it now, so maybe it's territory but it seemed more like "I can fly so who needs you humans" It was almost a week when she would make me bleed, 6 bites in what seemed like 10 seconds, everytime she was with me didn't matter much what room so I stopped trying to hold her and just talked to her. I can have her step up now but I take time to talk to her and offer her a treat first, and tonight not one bite so I'm ok with taking time I just feel like she is with me 1/3 of the time she was

I am kinda thinkin you did too much too soon. I got my quaker back in 2000 and I knew nothing about quakers at that time.....I soon learned....My Mr. Kiwi taught me alot of stuff....You just have to take it very slow with quakers,.....

Thanks for the reply,
I feel a bit better now! I will take it slow and steady. Having the sweet girl back if only for an hour tonight was delightful !! Her knickname for the week was birdzilla

I'll need more information from the experienced quaker people... but what age do they start to hit the teenage hormones? She might be growing out of her baby phase. I know if she's anything like my 15 year old son at the moment she's going to be moody as all get out. LOL