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The flicker fusion frequency of budgerigars (Melopsittacus undulatus) revisited
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Animal ecology.
Lund Univ, Dept Biol, Solvegatan 35, S-22362 Lund, Sweden..
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Animal ecology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Animal ecology.
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2017 (English)In: Journal of Comparative Physiology A. Sensory, neural, and behavioral physiology, ISSN 0340-7594, E-ISSN 1432-1351, Vol. 203, no 1, p. 15-22Article in journal (Refereed) Published
Abstract [en]

While color vision and spatial resolution have been studied in many bird species, less is known about the temporal aspects of bird vision. High temporal resolution has been described in three species of passerines but it is unknown whether this is specific to passerines, to small actively flying birds, to insectivores or to birds living in bright habitats. Temporal resolution of vision is commonly tested by determining the flicker fusion frequency (FFF), at which the eye can no longer distinguish a flickering light from a constant light of equal intensity at different luminances. Using a food reward, we trained the birds to discriminate a constant light from a flickering light, at four different luminances between 750 and 7500 cd/m(2). The highest FFF found in one bird at 3500 cd/m(2) was 93 Hz. Three birds had higher FFF (82 Hz) at 7500 cd/m(2) than at 3500 cd/m(2). Six human subjects had lower FFF than the birds at 1500 but similar FFF at 750 cd/m(2). These results indicate that high temporal resolution is not a common trait for all small and active birds living in bright light habitats. Whether it is typical for passerines or for insectivorous birds remains to be tested.

Place, publisher, year, edition, pages
SPRINGER , 2017. Vol. 203, no 1, p. 15-22
Keyword [en]
Visual ecology, Avian vision, Temporal resolution, Flicker fusion frequency, Psittaciformes
National Category
Zoology
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URN: urn:nbn:se:uu:diva-318612DOI: 10.1007/s00359-016-1130-zISI: 000393670200002PubMedID: 27837238OAI: oai:DiVA.org:uu-318612DiVA, id: diva2:1084665
Funder
Knut and Alice Wallenberg FoundationSwedish Research Council, 2012-2212Carl Tryggers foundation
Available from: 2017-03-27 Created: 2017-03-27 Last updated: 2017-11-29Bibliographically approved

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