I haven't seen that doco - but I did seen another that blew me away. This AG parrot was the focus of a lady's study of about 8 years or something, and new heaps and heaps of words. It could name colours, objects, shapes, and solve fairly simple puzzles (of about 2-3 child standard).
But the two things that absolutely astounded me where that,
1) the parrot had a favourite tree near a window in the lab that it loved to sit in. When it got bored of doing test, the parrot would say "Want to go home" (home being the tree)... And if the scientists asked it to keep going with the tests, the parrot would say (ask even?) "Soon - home soon"
2) The parrot loved to eat apple - one of his favourite foods. When asked to name different kinds of fruit in a bowl, the parrot would call it an "apple". However, when the parrot wanted a piece of apple as a treat, he would say "Want Ban-erry". Ban-erry?? When an observer asked the scientist why he called the apple a ban-erry, the scientist said that, to birds, apples taste quite a lot like bananas, and they look like a big cherry, so the bird had taken to calling his favourite fruit a "ban-erry".
:shock: OMG!! I couldn't believe it - it is one thing to say these birds are smart because they are one of the best mimicers in the birds world, but it is quiet another to see a BIRD be able to learn the English language, and then be able to use that work to convey feelings (like wanting to go "home soon") and to combine words to describe something that reminds him of two other objects! That is not just mimicry - it's intelligence. I was and am completely in awe.