"He knew his colors and shapes, he learned more than 100 English words, and with his own brand of one-liners he established himself in television shows, scientific reports and news articles as perhaps the world's most famous talking bird. But last week Alex, an African gray 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 his life and published reports of his progress in scientific journals. The parrot was 31." [NYT]