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Plos One : Switching Hemispheres ; a New Migration Strategy for the Disjunct Argentinean Breeding Population of Barn Swallow Hirundo Rustica, Volume 7

By Korb, Judith

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Book Id: WPLBN0003960510
Format Type: PDF eBook :
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Reproduction Date: 2015

Title: Plos One : Switching Hemispheres ; a New Migration Strategy for the Disjunct Argentinean Breeding Population of Barn Swallow Hirundo Rustica, Volume 7  
Author: Korb, Judith
Volume: Volume 7
Language: English
Subject: Journals, Science, Medical Science
Collections: Periodicals: Journal and Magazine Collection
Historic
Publication Date:
Publisher: Plos

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Korb, J. (n.d.). Plos One : Switching Hemispheres ; a New Migration Strategy for the Disjunct Argentinean Breeding Population of Barn Swallow Hirundo Rustica, Volume 7. Retrieved from http://ebook2.worldlibrary.net/


Description
Description : We used a three-isotope (d13C, d15N, d2H) approach to investigate potential wintering areas in Central and South America of individuals breeding in Argentina. Feather isotope values differed from those expected and measured at local breeding sites in Argentina indicating molt after the austral breeding period and away from the breeding grounds. Potential molting origins were identified applying likelihood-based assignment methods to a d2H isoscape for South America and dichotomous prior information on the distribution of C3 and C4 vegetation types based on modeled vegetation-d13C values. Barn Swallows now breeding in Argentina have changed their migratory behavior but presumably use the same cues as those used by the ancestral population, molting their feathers during the austral winter, likely in northeastern South America.

 

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