Region
United States
166
Colorado
3
Great Britain
2
New Mexico
2
Rome
2
Asia, Eastern
1
California
1
China
1
Gettysburg National Military Park (Pa.)
1
J. Clark Salyer National Wildlife Refuge
1
J. Clark Salyer National Wildlife Refuge (N.D.)
1
Micronesia
1
New York (N.Y.)
1
New York County (N.Y.)
1
North Dakota
1
Southern States
1
Switzerland
1
Virginia
1
Washington (D.C.)
1
Washington (State)
1