From the NY Times on-line:
But last week Alex, an African Grey parrot, died, apparently of natural causes, said Dr. Irene Pepperberg, a comparative psychologist at Brandeis University and Harvard who studied and worked with the parrot for most of its life and published reports of his progress in scientific journals. The parrot was 31.
We send our condolences to Irene, Alex was a remarkable animal.
Jim