I have two male budgies, one a year old and the other slightly younger. They are Mischa and Baby. Baby is the youngest and is a rainbow budgie. I let them out for about an hour a day and they fly around while I clean their cage. Often times they will return to the cage by themselves. Today I put Mischa in first and closed the top door of the cage so he would not decide to fly out, but I did not lock it. Baby decided to show off and would not let me bring him back. So I left him alone and when I turned around, Baby had flown to the closed top door of the cage and actually pulled it open with his beak and hopped right in !! So now his new name is Baby Einstein!