BOOK REVIEWS A Parrot without a Name The Search for the Last Unknown Birds on Earth Don Stap, 240 pp. index, 6 x 9, Alfred A. Knopf, New York, $19.95 This is an account of a 1987 collecting expedition to Peru for Louisiana State University, led by John O\u27Neill. He had already described 11 new species of birds and was still looking. Peru has 1700 known species of birds and still counting. It took them two days by outboard-powered dugouts to get to the camp site from the last settlement. Later, with higher water, two natives made it in a day, but the water was so low when they broke camp that most of the participants had to walk out, taking eight days. And in between accounts of this expedition Stap includes notes on another expedition wit...