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  • Title: [Comparative study of the ability to solve a string-pulling task in Corvidae].
    Author: Bagotskaia MS, Smirnova AA, Zorina ZA.
    Journal: Zh Vyssh Nerv Deiat Im I P Pavlova; 2010; 60(3):321-9. PubMed ID: 20737894.
    Abstract:
    The ability of hooded crows (Corvus cornix L.) and common ravens (Corvus corax L.) to pull up a bait suspended from a horizontal perch by a string was tested. It was shown that some birds of both species successfully solved the string-pulling task. Considerable inter-individual and inter-species differences in task performance are discussed.
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