Comparative Cognition Unit, Messerli Research Institute, University of Veterinary Medicine Vienna, University of Vienna, Medical University of Vienna, Vienna, Austria.
Department of Behavioural Biology, University of Vienna, Althanstraße 14, 1090, Vienna, Austria.
Biol Lett. 2021 Sep;17(9):20210250. doi: 10.1098/rsbl.2021.0250. Epub 2021 Sep 8.
Paying attention to weight is important when deciding upon an object's efficacy or value in various contexts (e.g. tool use, foraging). Proprioceptive discrimination learning, with objects that differ only in weight, has so far been investigated almost exclusively in primate species. Here, we show that while Goffin's cockatoos learn faster when additional colour cues are used, they can also quickly learn to discriminate between objects on the basis of their weight alone. Ultimately, the birds learned to discriminate between visually identical objects on the basis of weight much faster than primates, although methodological differences between tasks should be considered.
在各种情境下（例如，工具使用、觅食），关注物体的重量对于判断其效能或价值非常重要。目前，仅在灵长类物种中对依靠物体重量差异的本体感受辨别学习进行了研究。本研究表明，尽管凤头鹦鹉在使用附加颜色线索时学习更快，但它们也可以快速学会仅凭重量来区分物体。最终，鸟类学会了根据重量快速区分视觉上相同的物体，尽管任务之间的方法学差异应予以考虑。
