Refuge Map - Gravel Island - U.S. Fish and Wildlife Service

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Last Updated: Oct 09, 2012

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Caspian Tern

Caspian terns are the world’s largest terns. Adult birds have black legs, white head with black cap, thick reddish-orange bill with black tip and grey wings.

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Gravel IslandNational Wildlife Refuge | Wisconsin

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Additional Maps

What We Do

Caspian Tern

U.S. Fish & Wildlife Service

National Wildlife Refuge System

Department of the Interior

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