{"fact":"New Caledonian crows are so skilled at toolmaking that they incorporate hooks into their designs, a technology that chimpanzees don't possess and that humans only developed about 100,000 years ago.","context":"Some wild\nNC crows incorporate hooks into their tool designs, a level of technology not seen\nin our closest relatives, the chimpanzee, and that appears to have only emerged in\nour species around 100kya (Yellen et al. 2005).","source":"Alex H. Taylor; Sarah Jelbert, The crow in the room: New Caledonian crows offer insight into the necessary and sufficient conditions for cumulative cultural evolution, 10.1017/s0140525x20000102","index":524}