Shaping of Hooks in New Caledonian Crows

@article{Weir2002ShapingOH,
  title={Shaping of Hooks in New Caledonian Crows},
  author={A. Weir and Jackie Chappell and A. Kacelnik},
  journal={Science},
  year={2002},
  volume={297},
  pages={981 - 981}
}
Many animals use tools, but their understanding of physical forces or causal relations is unclear ([1][1], [2][2]). Primates are considered the most versatile and complex tool users, but observations of New Caledonian crows ( Corvus moneduloides ) ([3–5][3]) raise the possibility that these birds 
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Lateralization of tool use in New Caledonian crows (Corvus moneduloides)
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New Caledonian crows attend to multiple functional properties of complex tools
The evolutionary origins and ecological context of tool use in New Caledonian crows
Is primate tool use special? Chimpanzee and New Caledonian crow compared
  • W. McGrew
  • Biology, Medicine
  • Philosophical Transactions of the Royal Society B: Biological Sciences
  • 2013
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