Accessibility navigation

Anomalous binocular vision in African Harrier-hawks

Portugal, S. J., Ozturk, R., Murn, C. P. ORCID:, Potier, S. and Martin, G. R. (2023) Anomalous binocular vision in African Harrier-hawks. Current Biology, 33 (21). R1142-R1143. ISSN 0960-9822

Text (Open Access) - Published Version
· Available under License Creative Commons Attribution.
· Please see our End User Agreement before downloading.

[img] Text - Accepted Version
· Restricted to Repository staff only
· The Copyright of this document has not been checked yet. This may affect its availability.


It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.

To link to this item DOI: 10.1016/j.cub.2023.09.016


An animal’s visual field is the three-dimensional space around its head from which it can extract visual information at any instant. Bird visual fields vary markedly between species, and this variation is likely to be driven primarily by foraging ecology. We used the ophthalmoscopic reflex technique to determine the binocular visual fields of African Harrier-hawks and compared this with similar data available for other species from the Accipitridae family (Gypaetinae, Circaetinae, Aegypiinae, Aquilinae, Accipitrinae, Buteoninae). African Harrier-hawks are distinct among Accipitridae with respect to the degree of binocularity present in the upper portion of their visual field. We suggest that this distinctive binocular field topography is related to the African Harrier-hawks’ foraging strategies and prey location behaviours and are associated with their double-jointed ankle/intertarsal joints.

Item Type:Article
Divisions:Life Sciences > School of Biological Sciences > Ecology and Evolutionary Biology
ID Code:113542


Downloads per month over past year

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation