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Sexual dimorphism in breast stripe width and beak eco-morphology in Himalayan Green-backed Tits (Parus monticolus)

Barve, Sahas and Dixit, Soham and Dhondt, Andre A and Ishtiaq, Farah (2017) Sexual dimorphism in breast stripe width and beak eco-morphology in Himalayan Green-backed Tits (Parus monticolus). In: AVIAN BIOLOGY RESEARCH, 10 (4). pp. 259-263.

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Official URL: http://dx.doi.org/10.3184/175815617X15063340995374

Abstract

Quantitative field data on sexual dimorphism is scant for most bird species. In this first field study of a western Himalayan population of Green-backed Tits (Parus monticolus), we demonstrate that breast stripe width is a dimorphic trait that is a reliable measure to sex this species in the wild. Based on our ability to sex the birds in hand, we describe the sexual dimorphism in eco-morphoIogicaI variables in our study population. Sexual dimorphism in beak morphology changed from winter to summer due to males having shorter beaks (4.5%) in summer; however, there was little change in female beak measurements. Our study on this Himalayan congener of a widely studied European species can be used to inform studies of the evolutionary ecology of morphological traits in closely-related species inhabiting vastly different habitats.

Item Type: Journal Article
Additional Information: Copy right for this article belong to the SCIENCE REVIEWS 2000 LTD, PO BOX 7712, RUSHDEN NN10 1BJ, ENGLAND
Department/Centre: Division of Biological Sciences > Centre for Ecological Sciences
Depositing User: Id for Latest eprints
Date Deposited: 01 Oct 2018 14:14
Last Modified: 01 Oct 2018 14:14
URI: http://eprints.iisc.ac.in/id/eprint/60779

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