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Publication
Do Cory’s shearwaters Calonectris diomedea synchronize laying among close neighborhoods? A reappraisal using data from artificial nest sites
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Advisor(s)
Abstract(s)
Previous studies of Cory’s shearwater nesting
biology suggest that pairs nesting at very close range to one
another lay their eggs more synchronously than the colony
as a whole. However, such apparent synchrony could be
confounded by the existence of spatial structure in the
quality of nesting sites and, hence, quality of the birds
occupying the nests. If laying dates differ between sites of
different quality, then synchrony is just a by-product of the
spatial arrangement of nest sites. In this study, we show that
when studying laying dates in artificial nests of uniform
quality, no local synchronization of laying could be
detected. We point to other shortcomings of previous
analyses and conclude that, although Cory’s shearwaters
show remarkably synchronized attendance behaviors at the
nesting sites, there is no conclusive evidence showing that
laying dates are influenced by the behavior of near
neighbors.
Description
Keywords
Salvage islands Seabird Timing of breeding
Citation
Acta Ethologica, 9, 87-90
Publisher
Instituto Superior de Psicologia Aplicada