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[Crossbills (Loxia curvirostra) are able to form concept "larger than"].

Authors
  • Obozova, T A
  • Smirnova, A A
  • Zorina, Z A
Type
Published Article
Journal
Zhurnal vyssheĭ nervnoĭ deiatelnosti imeni I P Pavlova
Publication Date
Jan 01, 2009
Volume
59
Issue
3
Pages
318–325
Identifiers
PMID: 19591398
Source
Medline
License
Unknown

Abstract

A new original method to investigate some cognitive abilities of wild passerine birds was developed. In the course of experiments with five crossbills (Loxia curvirostra), it was shown that the method can be used to evaluate the ability of birds to form concepts. Crossbills were presented with pairs of stimuli each consisting of 1 to 10 equal elements. All the five crossbills learned to choose, within a pair, a stimulus with a larger array of elements. The birds successfully transferred this performance to novel stimuli considerably different from the training pairs comparable with the latter only in the number or area. One of the birds showed a complete transfer of the acquired performance of choice to stimuli consisting of 10 to 20 equal elements. Thus, the ability of forest passerine birds to form concept "larger than" was shown.

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