Great question! It’s not just about intelligence—though that plays a role. Some parrots, like macaws, are social and bond closely with their humans, which can motivate them to mimic speech. But I’ve read that species like African Greys have a larger vocal range and more brain capacity for speech learning. If your daughter’s set on a macaw, they can still be great talkers with enough attention! Check out this site I found—
scarlet macaw for sale — it has some good info on different parrot breeds and their personalities.