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- Title
The visual fields of the Harpy Eagle (Harpia harpyja).
- Authors
Brewer, Anna E.; de Moraes, Wanderlei; Ferreira, Thiago Alegre Coelho; Somma, Andre Tovares; Cubas, Zalmir Silvino; Lange, Rogerio R.; Tyrrell, Luke P.; Czepiel, Tara M.; Fernández-Juricic, Esteban; Montiani-Ferreira, Fabiano; Moore, Bret A.
- Abstract
We describe for the first time the visual fields of the largest tropical raptor, the Harpy Eagle (Harpia harpyja), a powerful keystone species that hunts almost exclusively in forested habitats. They have the largest blind area described to date of any diurnal raptor species, and relatively narrow binocular fields, which together may help explain the way they interact with their prey in the visually complex environments they inhabit. As a top predator, their spatial visual sampling is likely driven more by foraging needs than predator detection, and they thus serve as an excellent study species for understanding the tradeoffs between visually guided foraging and anti-predatory behaviors. Further studies on the position and the projection of retinal foveae, visual acuity, and color vision will improve our understanding of their visual capabilities and could play important roles in conservation of a vulnerable Neotropical species.
- Subjects
VISUAL fields; KEYSTONE species; COLOR vision; EAGLES; TOP predators; VISUAL acuity; SPATIAL ability
- Publication
Journal of Ornithology, 2023, Vol 164, Issue 3, p651
- ISSN
2193-7192
- Publication type
Article
- DOI
10.1007/s10336-023-02054-y