Region
United States
242
Colorado
8
Great Britain
4
Montana
4
North Dakota
3
Washington (State)
3
China
2
Ireland
2
Japan
2
Africa
1
Alaska
1
Arizona
1
Atlantic Coast (U.S.)
1
British Columbia
1
Foreign countries
1
Grand County
1
Grand County (Utah)
1
Kansas
1
Kenya
1
Kittitas County
1
Kittitas County (Wash.)
1
Marais des Cygnes National Wildlife Refuge
1
Marais des Cygnes National Wildlife Refuge (Kan.)
1
Mexico, Gulf of
1
Pacific Coast (U.S.)
1
Philippines
1
Pinatubo, Mount (Philippines)
1
Soviet Union
1
Turkey
1
Uintah County
1
Uintah County (Utah)
1
Upper Souris National Wildlife Refuge (N.D.)
1
Utah
1
Wyoming
1
Yakima River Watershed
1
Yakima River Watershed (Wash.)
1
Yugoslavia
1