Morphological adaptations to song flight in passerine birds: a comparative study
1992; Royal Society; Volume: 247; Issue: 1320 Linguagem: Inglês
10.1098/rspb.1992.0026
ISSN1471-2954
AutoresAnders Hedenström, Anders Pape Møller,
Tópico(s)Animal Vocal Communication and Behavior
ResumoRestricted accessMoreSectionsView PDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareShare onFacebookTwitterLinked InRedditEmail Cite this article Hedenström A. and Møller A. P. 1992Morphological adaptations to song flight in passerine birds: a comparative studyProc. R. Soc. Lond. B.247183–187http://doi.org/10.1098/rspb.1992.0026SectionRestricted accessArticleMorphological adaptations to song flight in passerine birds: a comparative study A. Hedenström Google Scholar Find this author on PubMed Search for more papers by this author and A. P. Møller Google Scholar Find this author on PubMed Search for more papers by this author A. Hedenström Google Scholar Find this author on PubMed and A. P. Møller Google Scholar Find this author on PubMed Published:23 March 1992https://doi.org/10.1098/rspb.1992.0026AbstractSong flight by birds is one of the most energetically expensive results of sexual selection, and behavioural or morphological features which reduce the magnitude of this cost should therefore be selectively advantageous. We use aerodynamical flight theory to predict how changes in morphology affect flight performance during song flight display. If manoeuvrability and gliding flight during aerial displays were important, this should favour reduced body size and increased wing span and wing area. If flapping flight endurance, climb rate, acceleration or maximum speed in gliding dive are important, selection should favour reduced body size and increased wing span, but not increased wing area. Selection should favour increased aspect ratio and decreased wing loading in most cases. These predictions were evaluated by using morphological data on males and females from eight pairs of related passerine species in which males of one species perform song flight but males of the other do not. Song flight was not associated with a reduction in body size, but wing span, wing area and aspect ratio increased, and wing loading decreased in males of species with song flight. This suggests that manoeuvrability and flapping flight performance have been the major selective forces affecting the morphology of males of species with song flight.FootnotesThis text was harvested from a scanned image of the original document using optical character recognition (OCR) software. As such, it may contain errors. Please contact the Royal Society if you find an error you would like to see corrected. Mathematical notations produced through Infty OCR. 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