I don't know if I'd call it mischievous but my handraised female budgie Joey is very oversexed as I've described previously. Today she picked up a blue plastic Pepsi cap, one of her toys, flew over to me and dropped it on my lap mid flight. She landed on top of her cage a few feet away and looked at me. I picked it up and gave it back to her. Then she arched her back and rested her chin on the cage top, raised her tail and pinned her eyes at me! Oh, dear! JOEY! I'm not your boyfriend! The poor girl wants it so bad! Fortunately her female cagemate Cora isnt responding to her efforts at seduction but I must keep Joey away from all male budgies. She isn't normal and I feel sorry for her. I hope she doesn't start laying eggs again like she did ack in April when she was only 6 months old.