ArticleProceedings. Biological sciences2023
Binocular field configuration in owls: the role of foraging ecology.
Article in Proceedings. Biological sciences, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed.
- Vision and Foraging in Structurally Complex Habitats: Common Moorhens (Ecology and evolution · 2026Article
- Exploring the visual system of the black grouse (Lyrurus tetrix): combining experimental and molecular approaches to inform strategies for reducing collisions.The Journal of experimental biology · 2026Article
- Visual field of the ferret (Mustela putorius furo), rat (Rattus norvegicus), and tree shrew (Tupaia belangeri).Journal of vision · 2025Article
- The visual impediment of cranial ornamentation in maleBiology letters · 2025Article
- Mammalian retinal specializations for high acuity vision evolve in response to both foraging strategies and morphological constraints.Evolution letters · 2025Article
- A seabird's eye view: visual fields of some seabirds (Laridae and Procellariidae) from tropical latitudes.Die Naturwissenschaften · 2024Article
- Binocular field configuration in owls: the role of foraging ecology.Proceedings. Biological sciences · 2023Article
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9 authors.
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Abstract
The binocular field of vision differs widely in birds depending on ecological traits such as foraging. Owls (Strigiformes) have been considered to have a unique binocular field, but whether it is related to foraging has remained unknown. While taking into account allometry and phylogeny, we hypothesized that both daily activity cycle and diet determine the size and shape of the binocular field in owls. Here, we compared the binocular field configuration of 23 species of owls. While we found no effect of allometry and phylogeny, ecological traits strongly influence the binocular field shape and size. Binocular field shape of owls significantly differed from that of diurnal raptors. Among owls, binocular field shape was relatively conserved, but binocular field size differed among species depending on ecological traits, with larger binocular fields in species living in dense habitat and foraging on invertebrates. Our results suggest that (i) binocular field shape is associated with the time of foraging in the daily cycle (owls versus diurnal raptors) and (ii) that binocular field size differs between closely related owl species even though the general shape is conserved, possibly because the field of view is partially restricted by feathers, in a trade-off with auditory localization.
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