My Green Cheek Conure, Pickle started plucking her cage (making noise with the bar and her beak) 3 weeks ago. She does it all night long. We've had her since Feburary and she never did this before. We did get a new bird about a week before she started this. She's been to the vet and her health is great. She eats and drinks and plays. She and our other bird Wall-E share a cage. They love each other though. One won't go anywhere without the other and the constantly preen each other. So I don't know what could be going on with her. Both birds are female according to their test results. The vet said she's not sure why she would do it all night long. Sometimes she doesn't even do it and she almost never does it during the day. I'm hoping that it's her way of getting use to having another bird with her but I don't know what to do. If she's not sleeping then I'm not sleeping so I really need some help in figuring out what is wrong with her. Pickle is my baby and I don't want anything to happen to her. Please help.