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Parent-offspring interactions in food provisioning of Manx shearwaters: Implications for nestling obesity

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JournalANIMAL BEHAVIOUR
DatePublished - 1 Mar 1999
Issue number3
Volume57
Number of pages5
Pages (from-to)627-631
Original languageEnglish

Abstract

Procellariiform seabirds such as the Manx shearwater, Puffinus puffinus, rear only one chick at a time but may breed many times in their lives; parents should thus limit food delivery to the chick in keeping with the balance between current and future reproductive output. Yet procellariiform chicks accumulate large quantities of lipid, which may provide a buffer against pronounced and unpredictable variation in food provisioning, resulting in part from an inability of parents to regulate food supply to the nest. We switched chicks between nests to examine the roles of parents and offspring in controlling food delivery. The serial autocorrelation in age-specific body masses for unmanipulated chicks decreased from 0.61 (P

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