Alex and Me by Irene M. Pepperberg
Alex and Me is about the avian intelligence work of scientist Irene Pepperberg and her most famous subject, an African Grey parrot named Alex. Alex had a vocabulary of over 100 words and was able to distinguish and label colors, shapes and numbers. He also understood concepts such as “bigger”, “smaller”, “same” and “different”. Pepperberg’s groundbreaking research proved that parrots are not just mimics, but are highly intelligent and can understand the meaning of the words they use.
Cooper would highly recommend this book. His favorite parts were when Alex was being mischievous. He also thinks that the parakeets Dr. Pepperberg owned from childhood through college were the inspiration for her later success.