Document Detail

Interannual differences in the relative timing of southward migration of male and female western sandpipers (Calidris mauri).
MedLine Citation:
PMID:  15905977     Owner:  NLM     Status:  MEDLINE    
In the shorebird subfamily Calidridinae, one of the parents shortens parental care and initiates southward migration before the other. We estimated the difference in passage date between male and female western sandpipers (Calidris mauri) at their first major stopover on the southward migration from breeding areas in Alaska, in 18 years between 1978 and 2000. Overall, adult females preceded adult males by 1.22 days. A novel finding was that among juveniles, which migrate approximately a month later than adults, females preceded males by similar magnitude (1.14 days). There was wide variation among years, however, and males actually preceded females in years with late hatch. We relate these findings to hypotheses for female-first southward migration in sandpipers.
Ronald C Ydenberg; Amanda C Niehaus; David B Lank
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2005-05-19
Journal Detail:
Title:  Die Naturwissenschaften     Volume:  92     ISSN:  0028-1042     ISO Abbreviation:  Naturwissenschaften     Publication Date:  2005 Jul 
Date Detail:
Created Date:  2005-08-05     Completed Date:  2005-11-07     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0400767     Medline TA:  Naturwissenschaften     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  332-5     Citation Subset:  IM    
Centre for Wildlife Ecology, Department of Biological Sciences, Simon Fraser University, Burnaby, BC, Canada.
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MeSH Terms
Animal Migration / physiology*
Birds / growth & development,  physiology*
Time Factors

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