I use to have a lovebird. She was a female and she was very sweet wehn I first got her, but as she got older she got aggressive and would bite me. I carried her to the petshop and asked some questions about her and the lady that owner the petshop said that when females get older they become more aggressive sometimes because they are getting ready to nest and have babies. I ended up having to give her to the lady at the petshop. I knew her and she's good friends with my mom. She wanted her as a pet.