ORNITHOLOGICAL SCIENCE
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Low level of extra-pair paternity in a population of the Barn Swallow Hirundo rustica gutturalis
Masaru HasegawaEmi AraiWataru KojimaWataru KitamuraGo FujitaHiroyoshi HiguchiMamoru WatanabeMasahiko Nakamura
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2010 Volume 9 Issue 2 Pages 161-164

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Abstract

On average, male birds other than social father sire more than 10% of all offspring. Levels of extra-pair paternity below 5% of offspring are rarely found and are now considered worthy of explanation in monogamous birds. We recorded the lowest levels of paternity loss ever reported in a population of Barn Swallows Hirundo rustica. The levels of extra-pair paternity were below 5% of offspring (7/243 in 2005 and 1/53 in 2006). We discuss our results in relation to the density-dependence of extra-pair paternity.

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© 2010 The Ornithological Society of Japan
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