title: Animal cognition: crows spontaneously solve a metatool task.
abstract: A recent study found that tool-manufacturing New Caledonian crows spontaneously solved a metatool task in which the birds used a tool to obtain a second, longer tool that could then be used to obtain food that was otherwise out of reach.
authors.affiliation: Department of Experimental Psychology, Downing Street, Cambridge CB2 3EB, UK. n.clayton@psychol.cam.ac.uk
authors.forename: Nicola
authors.initials: N
authors.lastname: Clayton
mesh_terms: D000818:Animals; D003071:Cognition / Q000502:physiology*; D046368:Crows / Q000502:physiology*; D008960:Models, Psychological; D011340:Problem Solving / Q000502:physiology; D053001:Tool Use Behavior / Q000502:physiology