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Author (up) Title Year Publication Serial Volume Pages
Bugnyar, T.; Heinrich, B. Pilfering ravens, Corvus corax, adjust their behaviour to social context and identity of competitors 2006 Animal Cognition 2449 9 369-376
Heinrich, B.; Bugnyar, T. Just how smart are ravens? 2007 Scientific American 4101 296 64-71
Tebbich, S.; Seed, A.M.; Emery, N.J.; Clayton, N.S. Non-tool-using rooks, Corvus frugilegus, solve the trap-tube problem 2007 Animal Cognition 2429 10 225-231