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Related Experiment Video

Updated: Jun 17, 2026

A Method for Investigating Change Blindness in Pigeons (Columba Livia)

A Method for Investigating Change Blindness in Pigeons (Columba Livia)

Published on: September 7, 2018

Changes in area affect figure-ground assignment in pigeons.

Leyre Castro¹, Olga F Lazareva, Shaun P Vecera

¹E11 Seashore Hall, Department of Psychology, The University of Iowa, United States.

Vision Research

|January 12, 2010

Summary

This summary is machine-generated.

Pigeons

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Area of Science:

Comparative psychology
Animal cognition
Visual perception

Background:

Humans use region size as a cue for figure-ground assignment, with smaller areas often perceived as figures.
Understanding cross-species visual processing aids in understanding general principles of perception.

Purpose of the Study:

To investigate whether pigeons (Columba livia) utilize region size as a cue for figure-ground discrimination.
To determine if pigeons' sensitivity to size cues is dependent on initial training conditions.

Main Methods:

Pigeons were trained to discriminate between a target on a figure versus a background.
The relative sizes of the figure and background were manipulated during training and testing.
Performance was measured by the accuracy of the pigeons' responses.

Main Results:

When initially trained with a smaller figure, pigeons' discrimination improved with smaller figures and worsened with larger figures.
When trained with equal-sized figure and background, pigeons' performance worsened with smaller figures.
The benefit of a smaller figural region was observed only when size was a relevant cue during initial discrimination training.

Conclusions:

Pigeons' figure-ground discrimination is influenced by region size, similar to humans.
The relevance of size as a perceptual cue is dependent on prior experience and training context.
This suggests that attentional mechanisms may play a role in how size influences figure-ground segregation in pigeons.