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Academic Journal

Initial evidence for eliciting contrafreeloading in grey parrots (Psittacus erithacus) via the opportunity for playful foraging.

  • Authors : Smith, Gabriella E., ORCID 0000-0002-6136-6351. Animal Behavior and Conservation Program, Department of Psychology, Hunter College, City University of New York, New York, NY, US; Greene, Diana, ORCID 0000-0002-0856-9504. Department of Psychology, Harvard University, Cambridge, MA, US; Hartsfield, Leigh Ann. Phoenix Landing, Asheville, NC, US

  • Source: Journal of Comparative Psychology, Vol 135(4), Nov, 2021. pp. 516-533.Journal of Animal Behavior; Journal of Comparative and Physiological Psychology; Psychobiology

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Academic Journal

Piagetian liquid overconservation in grey parrots (Psittacus erithacus).

  • Authors : Cornero, Francesca M., ORCID 0000-0001-7825-4746. Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA, US; Hartsfield, Leigh Ann, ORCID 0000-0002-2872-441X. Phoenix Landing, Asheville, NC, US; Pepperberg, Irene M., ORCID 0000-0001-9486-7323. Department of Psychology, Harvard University, Cambridge, MA, US,

  • Source: Journal of Comparative Psychology, Vol 134(2), May, 2020. pp. 197-210.Journal of Animal Behavior; Journal of Comparative and Physiological Psychology; Psychobiology

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Academic Journal

Piagetian Liquid Conservation in Grey Parrots (Psittacus erithacus).

  • Source: Journal of Comparative Psychology, Aug 31, 2017.Journal of Animal Behavior; Journal of Comparative and Physiological Psychology; Psychobiology

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Academic Journal

Can Grey parrots (Psittacus erithacus) succeed on a 'complex' foraging task failed by nonhuman primates (Pan troglodytes, Pongo abelii, Sapajus apella) but solved by wrasse fish (Labroides dimidiatus)?

  • Source: Journal of Comparative Psychology, Vol 128(3), Aug, 2014. pp. 298-306.Journal of Animal Behavior; Journal of Comparative and Physiological Psychology; Psychobiology

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Academic Journal

Reasoning by inference: Further studies on exclusion in grey parrots (Psittacus erithacus).

  • Authors : Pepperberg, Irene M.. Department of Psychology, Harvard University, Cambridge, MA, US, ; Koepke, Adrienne. ABC Program, Department of Psychology, Hunter College, City University of New York, New York, NY, US; Livingston, Paige. Department of Psychology, Harvard University, Cambridge, MA, US

  • Source: Journal of Comparative Psychology, Vol 127(3), Aug, 2013. pp. 272-281.Journal of Animal Behavior; Journal of Comparative and Physiological Psychology; Psychobiology

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