{"fact":"New Caledonian crows don't just use tools, they actively make different kinds, like hooked sticks and special tools from Pandanus leaves.","context":"They manufacture and use several types of tools for extractive foraging on invertebrates, including straight and hooked sticks, and complex stepped-cut flat tools made from leaves of Pandanus spp. (Hunt 1996, 2000a, b).","source":"Jackie Chappell; A. Kacelnik, Tool selectivity in a non-primate, the New Caledonian crow (Corvus moneduloides), 10.1007/s10071-002-0130-2","index":161}