I feel like we identify strongly with each other to large extents. I too have a pet rabbit that I got from a children zoo. He had severe syphilis infection that we got him treated for and honestly he lives on a golden platter.
His life is atleast 2 to 3 hours of intensive interaction, be it from either me or my partner. In addition we monitor his droppings very well, as well as providing a vast amount of diverse foods that we researched. I think this rabbit has practicaly everything that he can possible wish for; except for the vast amounts of space that he needs to run.
In addition I can't, like you, put this domesticated creature back into the wild, it will perish most certainly.
Though, recently we moved houses where we now have a garden he can, for the first time in a couple of years roam freely in, and it is stunning to notice the speed that he can achieve while running. Mind you, the entire house is his "cage", yes he does have a cage for his toilet but that door is always open.

What I learned from this rabbit is that absolute adores the great food and the amount of pets that he gets, but also how frequently alone he is, or how extremely social this creature is. My life carries on after his pets, but he is just stuck there to wait till either of us is back.

I certainly do not underestimate the amount of care that parrot owners provide to their parrot. I think it might be even more than we do for our rabbit. However, I think the parrot, or any other social animal, would be most happy when flying or running around and socializing with his peers. There are simply some things that even the best "owners" are able to provide.

To go into your arguments:

>Because sometimes there isn't a choice. Birds born into captivity do not re-hab well. Rescues (as is mine) are generally not able to live in the wild if they were just 'released', so someone has to take care of them.

I agree, that is the same situation I have with my rabbi. In these instances I'd say that it is what it is, but to let the pool of pets continue to grow would be a bad thing. A law against the procreation of pets would prevent that, albeit very slowly as this might just take couple of decades till most animals in captivity would perish, as you know parrots can grow over 100.

Like you say, the undivided attention we provide to our pets, but can you also provide him a social dynamic environment like he'd have if he'd be in the wild with his peers? Escaping for his life, fighting for a wife, eagerly searching for food throughout the day. None of that I believe as that is nigh impossible to provide as pet owner. Aviary's are even more horrid as they now still not have the space they'd really need. I have yet to come across one where you can't find a plucked bird (from NL).

>Sometimes, yes. Just like all animal conservancy. If we didn't care to give them better lives than what they had before, then we'd just put them all down wouldn't we? That's what PETA wants, anyway.

I am rather cynical about most animal conservancy programs, as they'd barrely ever get put back in nature and seem most often a front for growing zoos. But for all that do, I think that's great and acceptable, to certain extent.

>Lastly, birds brought into captivity often have no idea that a life other than their own exists. They're not 'missing out' on anything they're otherwise aware of. In fact, many owners take their birds out to free-fly quite often.

I agree for a large part with your arguments here, but not entirely on the not knowing of missing out. Most animals have natural tendencies to express and just do. Some are known, but most are not. Thus I think it's presumptuous to say that a bird doesn't know what it misses

>This isn't really a fair comparison, sorry. It's also not applicable in most places in the world - parrots generally come from a few specific places.

I think it is: Why do people introduce animals in surroundings that do not belong there? If you love your parrot so much, you'd provide him with the best he can possible get, which more than not is whatever surrounding that they're used to. E.g. no polar bears in the desert, and a parrot in a surround that is comparably hot / cold.

Why not stick with authentic, natural originations? I fell in love with magpies and crows and keep them as guards of my rabbit, through some feeding processes. It is truly amazing to see the interaction between the rabbit, and the magpies. I can definitely recommend you to read into magpies. They're possible even more interesting than parrots. Just fall in love with whatever you have around you. Nature is amazing enough as is, and the most boring and simple critters will definitely keep suprising you. You don't need a cage around it. Besides, don't you find observing the natural behaviour even more interesting?