Hi. I have a new budgie who was hand reared and is going through his first moult. I open his cage door. Jasper has always been happy to both come out and go back in at his own choice. he eats out of my hand, sits on my head is starting to talk and comes close to learn but he has started biting and he bites hard - ouch. I'm not sure why he's doing this as I've never shown him any anger and I don't make him do what he doesn't want to do. I let him be and mingle with him. any ideas on how to stop this biting behaviour as it can really hurt especially when it's my eyes as he likes to sit on my glasses, or my lip when he's listening to me. any help much appreciated and thank you.