Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Sep 17, 2007
CNN's Jim Clancy speaks with Dr. Irene Pepperberg, whose research parrot, Alex, was discovered dead last week. Alex was 31 and appeared to have died of natural causes, said Dr. Irene Pepperberg, the scientist who trained and studied him for three decades. RIP Alex.