Blane Klemek: Predators play essential role in healthy ecosystems
When I was employed as the manager and director of the Wetlands, Pines and Prairie Audubon Sanctuary (now called the Audubon Center of the Red River Valley and Omdahl Arboretum), which is a wildlife refuge and environmental education center near Warren, Minnesota, one of my responsibilities was constructing, installing, and monitoring wood duck nesting boxes — or wood duck houses as they are also called.
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