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Author Title Year Publication Serial Volume Pages
Weir, A.A.S.; Kacelnik, A. A New Caledonian crow (Corvus moneduloides) creatively re-designs tools by bending or unbending aluminium strips 2006 Animal Cognition 2436 9 317-334
Huber, L.; Gajdon, G.K. Technical intelligence in animals: the kea model 2006 Animal Cognition 2085 9 295-305
Blaisdell, A.P.; Sawa, K.; Leising, K.J.; Waldmann, M.R. Causal reasoning in rats 2006 Science (New York, N.Y.) 154 311 1020-1022