Ring recoveries of dead birds confirm that darker pheomelanic Barn Owls disperse longer distances

Roulin, Alexandre

In: Journal of Ornithology, 2013, vol. 154, no. 3, p. 871-874

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    Summary
    Variation in melanin coloration is widespread and often associated with other phenotypic traits. A recent study showed that darker-reddish pheomelanic Barn Owls (Tyto alba) move longer distances between birth and breeding sites. Because this study considered only individuals recovered within a limited study area, it remains unclear whether the association between melanism and dispersal applies to a larger geographic scale. I analysed an independent dataset of birds ringed in the same study area but recovered dead along roads within and outside this area. As expected, dark pheomelanic owls dispersed further than lighter reddish conspecifics at a larger spatial scale