Region
United States
47
États-Unis
11
Pennsylvania
7
Wisconsin
6
Louisiana
5
Africa, West
4
Detroit River International Wildlife Refuge
4
Detroit River International Wildlife Refuge (Mich.)
4
Gambia
4
Guinea-Bissau
4
Michigan
4
Sierra Leone
4
Caribbean Area
3
Chesapeake Bay (Md. and Va.)
3
Latin America
3
Virginia
3
Afrique occidentale
2
Chesapeake Bay Region (Md. and Va.)
2
Gambie
2
Guinée-Bissau
2
Idaho
2
Montana
2
West Africa
2
Wyoming
2
Albania
1
Amazon River Region
1
Amérique latine
1
Australia
1
Black Sea Coast
1
Black Sea Coast (Turkey)
1
Bowdoin National Wildlife Refuge
1
Bowdoin National Wildlife Refuge (Mont.)
1
Calakmul Region
1
Caraïbes (Région)
1
China
1
Chine
1
Clinton County
1
Delta (Miss. : Region)
1
Delta (Region)
1
Ecuador
1
Everglades (Fla.)
1
Great Britain
1
Hawaii
1
Inde
1
India
1
Indiana
1
Iowa
1
Kansas
1
Madison River (Wyo. and Mont.)
1
Malaisie
1
more ...