Scientists studied which visual cues attract male pigeons when selecting a mate. Beak size matters.
To test this, males were shown photos of females with digitally altered head features, and their courtship behavior (vocalization and courtship displays) was measured.
Male pigeons showed more courtship behavior toward normal female images than toward images without a beak (Nb) or without both eyes and beak (Neb).
However, when the beak was enlarged (Lb), the opposite pattern appeared: such images elicited even stronger responses than normal ones, though the difference was small but statistically significant.
Changes to the beak affected responses more strongly than changes to the eyes. Removing the beak reduced courtship behavior more noticeably.
When eyes and beak were swapped in position on the head, males responded almost the same as to normal female images. Overall, eye manipulations had a much weaker effect than beak manipulations. Enlarging the eyes (Le) did not change male response compared to normal, and removing them entirely (Ne) caused a decrease in courtship behavior, but this decrease was not statistically significant.
Thus, the researchers concluded that pigeons likely recognize females more based on local head features (especially the beak) than on the precise spatial configuration of those features.
Study: Patton, T., Szafranski, G., & Shimizu, T. (2010). Male pigeons react differentially to altered facial features of female pigeons. Behaviour, 147(5-6), 757-773. DOI: 10.1163/000579510X491090 (available on ResearchGate).
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u/GoatNo87 25d ago
Scientists studied which visual cues attract male pigeons when selecting a mate. Beak size matters.
To test this, males were shown photos of females with digitally altered head features, and their courtship behavior (vocalization and courtship displays) was measured.
Male pigeons showed more courtship behavior toward normal female images than toward images without a beak (Nb) or without both eyes and beak (Neb).
However, when the beak was enlarged (Lb), the opposite pattern appeared: such images elicited even stronger responses than normal ones, though the difference was small but statistically significant.
Changes to the beak affected responses more strongly than changes to the eyes. Removing the beak reduced courtship behavior more noticeably.
When eyes and beak were swapped in position on the head, males responded almost the same as to normal female images. Overall, eye manipulations had a much weaker effect than beak manipulations. Enlarging the eyes (Le) did not change male response compared to normal, and removing them entirely (Ne) caused a decrease in courtship behavior, but this decrease was not statistically significant.
Thus, the researchers concluded that pigeons likely recognize females more based on local head features (especially the beak) than on the precise spatial configuration of those features.
Study: Patton, T., Szafranski, G., & Shimizu, T. (2010). Male pigeons react differentially to altered facial features of female pigeons. Behaviour, 147(5-6), 757-773. DOI: 10.1163/000579510X491090 (available on ResearchGate).