Region
Africa
15
Africa, North
1
Africa, Sub-Saharan
5
Alabama
2
Alaska
9
Arctic National Wildlife Refuge (Alaska)
1
Argentina
1
Arizona
3
Arkansas
5
Ashland (Va.)
1
Asia
9
Asia, Central
4
Australia
4
Austria
1
Baltic Sea Region
1
Baltic States
1
Bangladesh
3
Beaver County
1
Belize
1
Black Hills National Forest (S.D. and Wyo.)
1
Botswana
1
Brazil
2
Buffalo
2
Cali (Colombia)
1
California
11
California, Northern
1
California, Southern
1
Cameroon
1
Canada
17
Canada, Northern
1
Caribbean Area
1
Centennial
2
Central America
1
Cherokee Indian Reservation
1
Chicago
2
Chicago (Ill.)
1
Chile
1
China
21
Cincinnati
1
Cincinnati (Ohio)
1
Cleveland Region
1
Colombia
9
Colorado
7
Congo (Brazzaville)
1
Congo (Democratic Republic)
1
Connecticut
4
Cuba
1
Dakar
1
Dallas
2
Delaware
1
more ...