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Related Experiment Video

Updated: Apr 28, 2026

A Method for Investigating Change Blindness in Pigeons Columba Livia

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Published on: September 7, 2018

Prototype identification and categorization of incomplete figures by pigeons.

K G White¹, B Alsop, L Williams

¹University of Otago, Dunedin, New Zealand.

Behavioural Processes

|June 5, 2014

Summary

Pigeons successfully identified novel degraded shapes and their underlying prototypes, challenging previous findings. This suggests shared abilities in categorization and prototype identification between pigeons and humans.

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Area of Science:

Cognitive psychology
Comparative cognition
Animal behavior

Background:

Previous studies indicated pigeons' inability to identify prototypes from corrupted exemplars, unlike humans.
This research addresses the limitations in understanding cross-species categorization abilities.

Purpose of the Study:

To investigate pigeons' capacity for prototype identification after training with degraded stimuli.
To compare pigeon and human categorization and prototype identification mechanisms.

Main Methods:

Pigeons were trained to discriminate between degraded squares and triangles.
A transfer test included novel degraded shapes and pure prototypes of squares and triangles.
Testing was conducted in extinction to assess categorization without reinforcement.

Main Results:

Pigeons accurately categorized novel examples of the degraded shapes.
Pigeons also successfully identified the pure prototype square and triangle.
Performance on both novel degraded exemplars and prototypes was successful.

Conclusions:

Pigeons demonstrate the ability to identify prototypes even after training with corrupted exemplars.
These findings suggest that categorization and prototype identification mechanisms may be conserved across species.
The study highlights potential shared cognitive processes in visual categorization between birds and mammals.