animal cognition

Open Access
Evidence of tool use in a seabird
- From the Cover
Annette L. Fayet, Erpur Snær Hansen, and Dora Biro

PNAS January 21, 2020 117 (3) 1277-1279; first published December 30, 2019. https://doi.org/10.1073/pnas.1918060117
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Tool-using puffins prickle the puzzle of cognitive evolution
- Feb 11, 2020
Open Access
Shearwaters know the direction and distance home but fail to encode intervening obstacles after free-ranging foraging trips
Oliver Padget, Geoff Stanley, Jay K. Willis, Annette L. Fayet, Sarah Bond, Louise Maurice, Akiko Shoji, Ben Dean, Holly Kirk, Ignacio Juarez-Martinez, Robin Freeman, Mark Bolton, and Tim Guilford

PNAS October 22, 2019 116 (43) 21629-21633; first published October 7, 2019. https://doi.org/10.1073/pnas.1903829116
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Elephants can determine ethnicity, gender, and age from acoustic cues in human voices
- From the Cover
Karen McComb, Graeme Shannon, Katito N. Sayialel, and Cynthia Moss

PNAS April 8, 2014 111 (14) 5433-5438; first published March 10, 2014. https://doi.org/10.1073/pnas.1321543111
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Extraordinary elephant perception
- Apr 08, 2014
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Newborn chickens generate invariant object representations at the onset of visual object experience
Justin N. Wood

PNAS August 20, 2013 110 (34) 14000-14005; https://doi.org/10.1073/pnas.1308246110
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Bottlenose dolphins can use learned vocal labels to address each other
Stephanie L. King and Vincent M. Janik

PNAS August 6, 2013 110 (32) 13216-13221; https://doi.org/10.1073/pnas.1304459110

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