Social status, forest disturbance, and Barred Owls shape long-term trends in breeding dispersal distance of Northern Spotted Owls

Julianna Jenkins, Damon Lesmeister, Eric Forsman, Katie Dugger, Steven Ackers, L. Steven Andrews, Chris McCafferty, M. Shane Pruett, Janice Reid, Stan Sovern, Rob Horn, Scott Gremel, J. David Wiens & Zhiqiang Yang
Dispersal among breeding sites in territorial animals (i.e. breeding dispersal) is driven by numerous selection pressures, including competition and spatiotemporal variation in habitat quality. The scale and trend of dispersal movements over time may signal changing conditions within the population or on the landscape. We examined 2,158 breeding dispersal events from 694 male and 608 female individually-marked Northern Spotted Owls (Strix occidentalis caurina) monitored over 28 years on seven study areas to assess the relative...
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