Document Detail

Experimental evidence for state-dependent nest weight in the blue tit, Cyanistes caeruleus.
MedLine Citation:
PMID:  19429209     Owner:  NLM     Status:  MEDLINE    
Parental investment in reproduction is generally limited by food availability, and so avian life-history research has traditionally focused on the brood rearing phase, when food requirements are greatest. Only relatively recently has the focus extended to the incubation phase, and even more recently to the nest-building phase, where observational and comparative evidence suggest that avian nest building is an energetically expensive and time-consuming activity. We aimed to experimentally test the limitations on this cost in a hole-breeding passerine, the blue tit (Cyanistes caeruleus), by providing supplementary food to experimental pairs during the nest-building period. In comparison with control females, that did not receive supplementary food, experimental females constructed heavier nests, with greater amounts of moss base but similar amounts of cup lining, despite there being no differences in the time taken to build the nest. This study provides empirical support for the hypothesis that avian nest building is a costly behaviour, limited by food availability.
Mark C Mainwaring; Ian R Hartley
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-02-13
Journal Detail:
Title:  Behavioural processes     Volume:  81     ISSN:  1872-8308     ISO Abbreviation:  Behav. Processes     Publication Date:  2009 May 
Date Detail:
Created Date:  2009-05-11     Completed Date:  2009-08-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7703854     Medline TA:  Behav Processes     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  144-6     Citation Subset:  IM    
Department of Biological Sciences, Lancaster Environment Centre, Lancaster University, Lancaster, UK.
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MeSH Terms
Nesting Behavior*
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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