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        <r:String xml:lang="en">Starling reproduction from Grimsö, Centroid of Research Area, 1981–2025</r:String>
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      <r:Content xml:lang="en">Inventory on starling (Sturnus vulgaris) reproduction. Nest boxes are surveyed annually, distributed in six sub areas (with 25 nest boxes each) within the research area. Boxes are checked for laid eggs and hatched fledglings.
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