This is not an article about them learning tricks but about the possible source of their higher intelligence -which allows them not only to learn tricks but also to figure things out, to build tools, etc. etc.
A new study by the University of Alberta found that there is an area in parrots brains that is much larger than in other species of birds and they think this could be one of the reasons why they are so intelligent (I highly recommend it - SUPER SUPER interesting!)
https://gizmodo.com/this-brain-part-cou ... 1827364851