The Beautiful Mind Clark's nutcracker!

This is a master matematician of the avian world. An individual caches thousands of pine-cone seeds and, later, remembers the exact location of each buried seed. You can read a little more about it here and check out a lot of interesting scientific papers here, including Geometric rule learning by Clark's nutcrackers. I first heard about it during my oral prelims I was asked about it! Well, it lives in caves and flies out to eat fruit during the night.