Beyond colour: consistent variation in near infrared and solar reflectivity in sunbirds (Nectariniidae)

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dc.contributor.authorShawkey, Matthew D.
dc.contributor.authorIgic, Branislav
dc.contributor.authorRogalla, Svana
dc.contributor.authorGoldenberg, Jonathan
dc.contributor.authorClusella-Trullas, Susana
dc.contributor.authorD'Alba, Liliana
dc.date.accessioned2021-05-13T00:12:23Z
dc.date.issued2017
dc.date.updated2020-11-23T10:15:08Z
dc.description.abstractThe visible spectrum represents a fraction of the sun’s radiation, a large portion of which is within the near infrared (NIR). However, wavelengths outside of the visible spectrum that are reflected by coloured tissues have rarely been considered, despite their potential significance to thermal effects. Here, we report the reflectivity from 300 to 2100 nm of differently coloured feathers. We measured reflectivity across the UV-Vis-NIR spectra of different (a) body parts, (b) colour-producing mechanisms and (c) sexes for 252 individuals of 68 sunbird (family: Nectariniidae) species. Breast plumage was the most reflective and cap plumage the least. Female plumage had greater reflectivity than males. Carotenoid-based colours had the greatest reflectivity, followed by non-iridescent and iridescent melanin-based colours. As ordered arrays of melanin-filled organelles (melanosomes) produce iridescent colours, this suggests that nanostructuring may affect reflectance across the spectrum. Our results indicate that differently coloured feathers consistently vary in their thermal, as well as obvious visual, properties.en_AU
dc.description.sponsorshipThe work was funded by Fonds Wetenschappelijk Onderzoek grants G0G2217N and G07117N and Air Force Office of Scientific Research grant FA9550-16-1-0331 (MDS).en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn1432-1904en_AU
dc.identifier.urihttp://hdl.handle.net/1885/232985
dc.language.isoen_AUen_AU
dc.publisherSpringeren_AU
dc.rights© Springer-Verlag GmbH Germany 2017en_AU
dc.sourceThe Science of Nature (formerly Naturwissenschaften)en_AU
dc.source.urihttps://link.springer.com/article/10.1007/s00114-017-1499-8en_AU
dc.subjectIridescenceen_AU
dc.subjectThermalen_AU
dc.subjectInfrareden_AU
dc.titleBeyond colour: consistent variation in near infrared and solar reflectivity in sunbirds (Nectariniidae)en_AU
dc.typeJournal articleen_AU
local.bibliographicCitation.issue78en_AU
local.bibliographicCitation.lastpage5en_AU
local.bibliographicCitation.startpage1en_AU
local.contributor.affiliationShawkey, Matthew D., University of Ghenten_AU
local.contributor.affiliationIgic, Branislav, College of Science, ANUen_AU
local.contributor.affiliationRogalla, Svana, University of Ghenten_AU
local.contributor.affiliationGoldenberg, Jonathan, University of Ghenten_AU
local.contributor.affiliationClusella-Trullas, Susana, Stellenbosch Universityen_AU
local.contributor.affiliationD'Alba, Liliana, University of Ghenten_AU
local.contributor.authoremailu4798587@anu.edu.auen_AU
local.contributor.authoruidIgic, Branislav, u4798587en_AU
local.description.embargo2099-12-31
local.description.notesImported from ARIESen_AU
local.identifier.absfor060201 - Behavioural Ecologyen_AU
local.identifier.absseo970106 - Expanding Knowledge in the Biological Sciencesen_AU
local.identifier.ariespublicationu4351680xPUB365en_AU
local.identifier.citationvolume104en_AU
local.identifier.doi10.1007/s00114-017-1499-8en_AU
local.identifier.scopusID2-s2.0-85031696028
local.identifier.uidSubmittedByu4351680en_AU
local.publisher.urlhttps://link.springer.com/articleen_AU
local.type.statusPublished Versionen_AU

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