Canny crows know their tools
Tuesday, October 8, 2013 - 07:00
in Paleontology & Archaeology
(Phys.org) —Scientists at the University of St Andrews have discovered that New Caledonian crows, famous for their use of tools to extract hidden food, do not rely on guesswork when deploying one of their most complicated tool types; hooked stick tools. In fact, research published today suggests that they pay close attention to the features of each tool, ensuring that the hooked end is oriented correctly for snagging prey.