---
_id: '7160'
abstract:
- lang: eng
  text: 'Nocturnal animals that rely on their visual system for foraging, mating,
    and navigation usually exhibit specific traits associated with living in scotopic
    conditions. Most nocturnal birds have several visual specializations, such as
    enlarged eyes and an increased orbital convergence. However, the actual role of
    binocular vision in nocturnal foraging is still debated. Nightjars (Aves: Caprimulgidae)
    are predators that actively pursue and capture flying insects in crepuscular and
    nocturnal environments, mainly using a conspicuous “sit-and-wait” tactic on which
    pursuit begins with an insect flying over the bird that sits on the ground. In
    this study, we describe the visual system of the band-winged nightjar (Systellura
    longirostris), with emphasis on anatomical features previously described as relevant
    for nocturnal birds. Orbit convergence, determined by 3D scanning of the skull,
    was 73.28°. The visual field, determined by ophthalmoscopic reflex, exhibits an
    area of maximum binocular overlap of 42°, and it is dorsally oriented. The eyes
    showed a nocturnal-like normalized corneal aperture/axial length index. Retinal
    ganglion cells (RGCs) were relatively scant, and distributed in an unusual oblique-band
    pattern, with higher concentrations in the ventrotemporal quadrant. Together,
    these results indicate that the band-winged nightjar exhibits a retinal specialization
    associated with the binocular area of their dorsal visual field, a relevant area
    for pursuit triggering and prey attacks. The RGC distribution observed is unusual
    among birds, but similar to that of some visually dependent insectivorous bats,
    suggesting that those features might be convergent in relation to feeding strategies.'
article_processing_charge: No
article_type: original
author:
- first_name: Juan Esteban
  full_name: Salazar, Juan Esteban
  last_name: Salazar
- first_name: Daniel
  full_name: Severin, Daniel
  last_name: Severin
- first_name: Tomas A
  full_name: Vega Zuniga, Tomas A
  id: 2E7C4E78-F248-11E8-B48F-1D18A9856A87
  last_name: Vega Zuniga
- first_name: Pedro
  full_name: Fernández-Aburto, Pedro
  last_name: Fernández-Aburto
- first_name: Alfonso
  full_name: Deichler, Alfonso
  last_name: Deichler
- first_name: Michel
  full_name: Sallaberry A., Michel
  last_name: Sallaberry A.
- first_name: Jorge
  full_name: Mpodozis, Jorge
  last_name: Mpodozis
citation:
  ama: 'Salazar JE, Severin D, Vega Zuniga TA, et al. Anatomical specializations related
    to foraging in the visual system of a nocturnal insectivorous bird, the band-winged
    nightjar (Aves: Caprimulgiformes). <i>Brain, Behavior and Evolution</i>. 2020;94(1-4):27-36.
    doi:<a href="https://doi.org/10.1159/000504162">10.1159/000504162</a>'
  apa: 'Salazar, J. E., Severin, D., Vega Zuniga, T. A., Fernández-Aburto, P., Deichler,
    A., Sallaberry A., M., &#38; Mpodozis, J. (2020). Anatomical specializations related
    to foraging in the visual system of a nocturnal insectivorous bird, the band-winged
    nightjar (Aves: Caprimulgiformes). <i>Brain, Behavior and Evolution</i>. Karger
    Publishers. <a href="https://doi.org/10.1159/000504162">https://doi.org/10.1159/000504162</a>'
  chicago: 'Salazar, Juan Esteban, Daniel Severin, Tomas A Vega Zuniga, Pedro Fernández-Aburto,
    Alfonso Deichler, Michel Sallaberry A., and Jorge Mpodozis. “Anatomical Specializations
    Related to Foraging in the Visual System of a Nocturnal Insectivorous Bird, the
    Band-Winged Nightjar (Aves: Caprimulgiformes).” <i>Brain, Behavior and Evolution</i>.
    Karger Publishers, 2020. <a href="https://doi.org/10.1159/000504162">https://doi.org/10.1159/000504162</a>.'
  ieee: 'J. E. Salazar <i>et al.</i>, “Anatomical specializations related to foraging
    in the visual system of a nocturnal insectivorous bird, the band-winged nightjar
    (Aves: Caprimulgiformes),” <i>Brain, Behavior and Evolution</i>, vol. 94, no.
    1–4. Karger Publishers, pp. 27–36, 2020.'
  ista: 'Salazar JE, Severin D, Vega Zuniga TA, Fernández-Aburto P, Deichler A, Sallaberry A.
    M, Mpodozis J. 2020. Anatomical specializations related to foraging in the visual
    system of a nocturnal insectivorous bird, the band-winged nightjar (Aves: Caprimulgiformes).
    Brain, Behavior and Evolution. 94(1–4), 27–36.'
  mla: 'Salazar, Juan Esteban, et al. “Anatomical Specializations Related to Foraging
    in the Visual System of a Nocturnal Insectivorous Bird, the Band-Winged Nightjar
    (Aves: Caprimulgiformes).” <i>Brain, Behavior and Evolution</i>, vol. 94, no.
    1–4, Karger Publishers, 2020, pp. 27–36, doi:<a href="https://doi.org/10.1159/000504162">10.1159/000504162</a>.'
  short: J.E. Salazar, D. Severin, T.A. Vega Zuniga, P. Fernández-Aburto, A. Deichler,
    M. Sallaberry A., J. Mpodozis, Brain, Behavior and Evolution 94 (2020) 27–36.
date_created: 2019-12-09T09:04:13Z
date_published: 2020-01-01T00:00:00Z
date_updated: 2024-02-22T15:18:34Z
day: '01'
department:
- _id: MaJö
doi: 10.1159/000504162
external_id:
  isi:
  - '000522856600004'
  pmid:
  - '31751995'
intvolume: '        94'
isi: 1
issue: 1-4
language:
- iso: eng
month: '01'
oa_version: None
page: 27-36
pmid: 1
publication: Brain, Behavior and Evolution
publication_identifier:
  eissn:
  - 1421-9743
  issn:
  - 0006-8977
publication_status: published
publisher: Karger Publishers
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Anatomical specializations related to foraging in the visual system of a nocturnal
  insectivorous bird, the band-winged nightjar (Aves: Caprimulgiformes)'
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 94
year: '2020'
...