Hi, when I first got my cockatiels in June their wings were clipped and they are grown out now so they can fly very very well every time a door opens they fly off me out it and they crash in to windows and behind things that I can't get to. I'm worried that they will fly out an open window or door. The other people in my house don't like the birds and would leave windows and doors open all the time so I don't think they will make sure every window and door is closed. What should I do? I would rather not clip again.