Oh, don't misunderstand me, Polarn! I am not against training but it depends on the species of bird and the purpose as well as the training itself whether the exercise will, indeed, enrich their life or it's done mostly for the human's benefit. My birds know lots and lots of commands - of course, they sometimes choose not to follow them but then, I had the same degree of success with my kids so their 'disobedience' is not something that I am not used to
I don't have training sessions with them and I don't use clickers, targets or even rewards. I just react the same way and with the same words every time they do an action and give them praise if they obey my command or tell they they are bad birds if they don't and get up and make them do it. This 'make them do it' might sound as if I am flooding them but I don't - I am talking about, for example, their not perching on Pookey's cage because she gets all bent out of shape when they do so, if I hear her complaining (she makes a special kind of call when they do) and I tell them to 'shoo' (they know this means they have to fly somewhere else) and they don't do it, I just get up, walk over while saying they are bad birds, and make them step up so I can move them to another spot. If they do it, I tell them they are good birds. And, believe it or not, most of them they do it although, sometimes, they wait until I start to get up (just like kids pushing the parent's buttons
You have a single macaw with only you for company so yes, having daily 'training' sessions will, indeed, keep her entertained. But this thread is about a budgie, a little aviary parent-raised bird - which are always VERY flighty!- that has a bird companion of her own so it's not the same thing. And I still think it's a wonder that she cuddles on her human's neck like that! I certainly never had a budgie doing that with me.