You searched for: Subject Environment Remove constraint Subject: Environment Subject Birds-Breeding Remove constraint Subject: Birds-Breeding Place United States Remove constraint Place: United States Place Colorado Remove constraint Place: Colorado Place Alabama Remove constraint Place: Alabama
1966. Patuxent Wildlife Research Center. This line shapefile portrays the current routes used for conducting Breeding Bird Surveys in the lower 48 States. This layer is part of the 1997-20... National Atlas of the United States.