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Fall Flights 2013

If weather permits, each week during the fall waterfowl migration period, biologists fly over the Upper Mississippi River National Wildlife & Fish Refuge (Pools 4-14) and Trempealeau National Wildlife Refuge to estimate bird use. These surveys are completed through the cooperative efforts of the US Fish and Wildlife Service, Wisconsin Dept. of Natural Resources, and Illinois Natural History Survey.

Last Updated: Dec 11, 2013
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