I feel so sorry for Gus. My condolences to you, Liz. Sounds like Cindy215 has some good insight into parrotlet behavior that will help you prevent Pickles from harming another one of your birds. So very sorry for your loss.....
Pickles of course think's nothing happened, she is with me right now happy as ever. I moved her to our room, she cannot see any of the other birds. Hopefully this helps her, and no more Parrotlets or any other birds. I don't want to lose any others.