I love my parrot todd! The greatest diversity of parrots is in South America and Australia 
Parrots.  Most of them seem very bright.
Indeed, they have a features including a strong, curved bill, an upright stance, strong legs and clawed zygodactyl feet! 
Can you teach most parrots to talk?
You can teach parrots to mimic sounds for sure. Many parrots are vividly coloured, and some are even multi coloured 
I have heard that the African Grey is the most intelligent parrot.  Is that true?
I couldn't tell you fur sure but i know that parrots nest in tree hollows and lay white eggs from which hatch helpless young!