{"fact":"New Caledonian crows are remarkably skilled tool users, spontaneously using twigs and crafting tools from leaves, a behavior potentially influenced by cultural learning in the wild.","context":"New Caledonian crows, Corvus moneduloides, are the most advanced avian tool makers and tool users. We previously reported that captive-bred isolated New Caledonian crows spontaneously use twig tools and cut tools out of Pandanus spp. tree leaves, an activity possibly under cultural influence in the wild.","source":"Ben Kenward; Christian Rutz; Alex A.S. Weir; Alex Kacelnik, Development of tool use in New Caledonian crows: inherited action patterns and social influences, 10.1016/j.anbehav.2006.04.007","index":38}