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Extra-pair paternity in the boreal, socially monogamous Grey-headed Chickadee (Poecile cinctus)

Kleven, Oddmund; Rudolfsen, Geir; Schmoll, Tim
Peer reviewed, Journal article
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URI
https://hdl.handle.net/11250/2724601
Date
2020
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  • Scientific publications [764]
Abstract
Extra-pair mating is common alternative reproductive strategyamong socially monogamous bird species, but empirical data on the genetic mating systems of most species are still lacking. Here we present the first parentage study in the Grey-headed Chickadee (Poecile cinctus), a socially monogamous passerine breeding at low densities in the boreal region of the Palaearctic and Nearctic. In a population in northeastern Norway sampled acrosssix years,the probability for abrood to contain at least one extra-pair offspring was 37.5% (95% CI: 17.9–62.3%; total N = 16) and on average 16.7% (95% CI: 6.9– 35.0%; total N = 120) of nestlings per brood were sired extra-pair.
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Ornis Fennica

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