I have a B&G Macaw and hand reared him. I've also smoked like a freight train around him his entire life. He's about 15 years old. But aside from being a violent killer (or at least he tries to present this image until you scratch his head) he's fine. Been huffing on a 510 for about a month and his demeanor has not changed! Some birds are born wit an attitude! Heh, Heh, Heh