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      Male provisioning is negatively correlated with attempted extrapair copulation frequency in the stitchbird (or hihi).

      Animal Behaviour

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          Abstract

          In species with biparental care of offspring and high levels of extrapair parentage, paired males may suffer reduced fitness by investing in offspring that are not their own. In such instances, males are predicted to evolve some form of discrimination between kin and nonkin and vary investment accordingly. One simple form of discrimination is to follow behavioural cues to paternity. We investigated paternal contribution to chick rearing in a socially monogamous population of stitchbirds, Notiomystis cincta, with high levels of extrapair copulation (EPC) and extrapair paternity. The relative contribution of the male to chick provisioning was negatively correlated with attempted EPC frequency. Because the majority of EPC attempts are forced and conspicuous in stitchbirds they are an obvious cue for males to use. Copyright 2000 The Association for the Study of Animal Behaviour.

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          Journal
          11032645
          10.1006/anbe.2000.1485

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