Binocular field configuration in owls : The role of foraging ecology
(2023) In Proceedings of the Royal Society B: Biological Sciences 290(2009).- 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... (More)
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.
(Less)
- author
- Potier, Simon LU ; Roulin, Alexandre ; Martin, Graham R. ; Portugal, Steven J. ; Bonhomme, Vincent ; Bouchet, Thierry ; De Romans, Romuald ; Meyrier, Eva and Kelber, Almut LU
- organization
- publishing date
- 2023-10
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- binocular vision, foraging, morphometrics, owls, raptors
- in
- Proceedings of the Royal Society B: Biological Sciences
- volume
- 290
- issue
- 2009
- article number
- 20230664
- pages
- 12 pages
- publisher
- Royal Society Publishing
- external identifiers
-
- pmid:37848065
- scopus:85174750066
- ISSN
- 0962-8452
- DOI
- 10.1098/rspb.2023.0664
- language
- English
- LU publication?
- yes
- id
- 1ce6d96c-f0a2-4f25-84ac-36573260faf3
- date added to LUP
- 2023-12-15 10:40:09
- date last changed
- 2024-04-14 02:30:59
@article{1ce6d96c-f0a2-4f25-84ac-36573260faf3,
abstract = {{<p>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.</p>}},
author = {{Potier, Simon and Roulin, Alexandre and Martin, Graham R. and Portugal, Steven J. and Bonhomme, Vincent and Bouchet, Thierry and De Romans, Romuald and Meyrier, Eva and Kelber, Almut}},
issn = {{0962-8452}},
keywords = {{binocular vision; foraging; morphometrics; owls; raptors}},
language = {{eng}},
number = {{2009}},
publisher = {{Royal Society Publishing}},
series = {{Proceedings of the Royal Society B: Biological Sciences}},
title = {{Binocular field configuration in owls : The role of foraging ecology}},
url = {{http://dx.doi.org/10.1098/rspb.2023.0664}},
doi = {{10.1098/rspb.2023.0664}},
volume = {{290}},
year = {{2023}},
}