That was quite interesting, I'm quite familiar with chimp intelligence but not so with parrots
I am not surprised though, a number of animals, all social, exhibit the basics of human child behaviour. If you look at it objectively, it is clear that consciousness is on a sliding scale, is emergent and must be a result of humans doing basically the same thing that other animals do, only "better".
(Man I hate linking to my site all the time, but I'm only trying to be informative and get me some feedback! I have proposed a model for consciousness, which basically explains how the mind of any "higher" beast works, would explain the parrot I believe, and I'm rewriting it now, so take a ganders
if you're interested).