Horseshoe crabs come ashore in spring at Mispillion Harbor, Delaware. (Photo: Gregory Breese/USFWS)
National wildlife refuges are world-renowned as places to see great seasonal migrations of fish and wildlife, iconic animals like bison and bears, and ordinary creatures thriving in their natural habitats.
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Seasonal Wonders
National wildlife refuges are ideal places to see the remarkable mass movements of wildlife as the seasons change.