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Can we measure the benefits of help in cooperatively breeding birds: the case of superb fairy-wrens Malurus cyaneus ?

Cockburn, Andrew; Sims, Rachel; Osmond, Helen; Green, David; Double, Michael; Mulder, Raoul A


1. Correlational studies of reproductive success are plagued by difficulty over the direction of causation. For example, improved reproductive success with age can result from increased experience or reproductive effort, or selection against low-quality phenotypes that survive poorly. An association between supernumeraries and reproductive success in cooperative breeders can arise either because supernumeraries boost productivity, or productive territories accumulate supernumeraries. 2. Paired...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: Journal of Animal Ecology
DOI: 10.1111/j.1365-2656.2007.01351.x


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