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1 June 2000 Tool Modification and Use by an American Crow
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Abstract
An American Crow (Corvus brachyrhynchos) was observed to modify and use a piece of wood as a probe.
and Carolee Caffrey "Tool Modification and Use by an American Crow," The Wilson Bulletin 112(2), (1 June 2000). https://doi.org/10.1676/0043-5643(2000)112[0283:TMAUBA]2.0.CO;2
Received: 21 October 1999; Accepted: 1 February 2000; Published: 1 June 2000
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