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Parrots Voluntarily Help Each Other to Obtain Food Rewards |
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| Affiliation: | 1. Max Planck Institute for Ornithology, Eberhard-Gwinner-Str., 82319 Seewiesen, Germany;2. Max Planck Comparative Cognition Research Station, Loro Parque Fundación, Av. Loro Parque, 38400 Puerto de la Cruz, Tenerife, Spain;3. Department of Biology, Ludwig-Maximilians-University of Munich, Großhaderner Str. 2, 82152 Planegg-Martinsried, Germany |
| Abstract: | |
| Keywords: | instrumental helping prosociality parrots reciprocity social tolerance |
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