Susanne Stenius

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In Wood WarblersPhylloscopus sibilatrix in South-Central Sweden, paired males spend considerable time trying to attract additional females either in outlying parts of their territory or in a secondary territory at some distance from the first. Approximately 20 % of the paired males succeed in attracting an additional female, while the rest stay monogamous.(More)
It has been suggested that polyterritoriality in birds, i.e. mated males defending two spatially separated territories, deceives females into accepting polygyny against their best interest. Mated males singing on secondary territories should make it difficult for new arriving females to assess the mating status of unmated and mated males advertising to(More)
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