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Parent-absent calls are related to nestling reaction time and parental food allocation in the spotless starling

AuthorsJimeno, Blanca; Gil, Diego
KeywordsSibling negociation
Sibling competition
Parental care
Sturnus unicolor
Parent-absent begging
Spotless starling
Issue Date2015
PublisherBrill Academic Publishers
CitationBehaviour 152(10): 1413-1431 (2015)
Abstract© 2015 Koninklijke Brill NV, Leiden. Absent repeat calls (ARC) are produced by nestlings of some bird species when parents are not at the nest, and play a role in sibling interactions and parental investment. We explored if individual traits influencing begging also determine ARC in the spotless starling (Sturnus unicolor), and whether this behaviour explains nestling feeding success. We video-taped natural broods and examined the effects of experimental feeding in this behaviour. Experimentally fed chicks stopped calling and received fewer feedings. Among un-fed chicks, absence calls were more frequent in smaller nestlings. We found a positive relationship between nestling reaction time to parental arrival and food acquisition: chicks that reacted first received more feedings that slower chicks. ARC performance was also positively related to reaction time: chicks that produced more calls also reacted first to parents. These results suggest that ARC may have important effects on resource allocation and family interaction networks.
Identifiersdoi: 10.1163/1568539X-00003285
issn: 1568-539X
Appears in Collections:(MNCN) Artículos
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