July 30, 2025

Difficulties in the learning of same-different discrimination using multiple-item displays in pigeons (Columba livia)

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Experiment reveals challenges in same-different discrimination for pigeons using multiple-item displays, highlighting the role of entropy.

MAIN FINDING: Pigeons faced challenges in learning same-different discrimination between multiple-item displays.
KEY EVIDENCE: The study indicated that entropy influenced pigeons' performance more than understanding abstract concepts.
APPROACH: Two experiments tested different training procedures to improve pigeons' discrimination abilities.
SIGNIFICANCE: Findings may inform better training methods for enhancing discrimination learning in pigeons and similar species.

Ushitani et al. (2025) studied this question.

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Experiment reveals challenges in same-different discrimination for pigeons using multiple-item displays, highlighting the role of entropy.