In the Times, George Johnson writes quite a nice piece about just how intelligent Alex, the talking Harvard parrot, may have been.

Skeptics have long dismissed Dr. Pepperberg’s successes with Alex as a subtle form of conditioning — no deeper philosophically than teaching a pigeon to peck at a moving spot by bribing it with grain. But the radical behaviorists once said the same thing about people: that what we take for thinking, hoping, even theorizing, is all just stimulus and response.

Here’s Alex on a PBS show. Not only smart, but cute!