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Type of publication: Journal Article
Type of document: Letter

Year: 2021

Authors: Lambert, PJ; Stiegler, A; Rössler, T; Lambert, ML; Auersperg, AMI

Title: Goffin's cockatoos discriminate objects based on weight alone.

Source: Biol Lett. 2021; 17(9):20210250

Authors Vetmeduni Vienna:

Auersperg Alice Isabel Marie
Lambert Megan
Lambert Poppy
Rößler Theresa

Vetmed Research Units
Messerli Research Institute, Comparative Cognition

Project(s): Technical Innovativeness in the Goffin’s Cockatoo (Cacatua goffiniana)

Probing the limits of flexible tool use in kea (Nestor notabilis)

The innovation problem: factors influencing innovative tool use in humaninfants and cockatoos

CockaTools:Innovative tool use and problem solving in a parrot

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.

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