Alex is an African Grey parrot who single-handedly, with the help of Irene (now Pepperberg, though divorced), changed to meaning of bird-brained and challenged to hegemony of primate (or mammalian) intellectual superiority.
"Want a nut." Alex was obviously getting more than a little frustrated. ... He looked at me and said slowly, "Want a nut. Nnn ... uh ... tuh."A wonderfully written book about animal intelligence and science. I can not recommend it more highly.
I was stunned. It was as if he were saying, Hey stupid, do I have to spell it out for you?