The Evolution of Animal Intelligence

Under burns theory, you have regular animal intelligence that's trial and error learning some animals are faster summer slower, but they all have the same capacity to learn. Then you have a small subset of animals, elephants apes, great parents, dolphins probably it's hard to experiment with dolphins, whales, that there's this group of animals that can do trial and error in their mind and come up with insight into what they need to do. Even though Alex the parrots brain is the size of a walnut,. It has the same intelligence as the great apes. Same as an elephant has the same intelligent level as an elephant. And Alex the parrot is an animal with insight, just like what