I would love to one day have a walk in closet converted into a parrot room where there is no cage. I think it is unwise to have a free range parrot unsupervised (clipped or not). That's asking for a bird to eat something it shouldn't.
Really though, all homes are cages. It's not like the bird is allowed to fly 15 miles east if it wants. Trying to balance "natural" in a human environment is tricky. I would be more focused on making sure my bird has an enriching life than focusing on things I would think are natural.












