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- Hunting 9
- Malheur National Wildlife Refuge (Or.) 9
- Wildlife refuges 7
- Birds--Conservation--Law and legislation 6
- Lakes--Oregon 6
- Meadowlarks 6
- Agriculture 5
- Carlsbad Bird Reservation (New Mexico) 5
- Rio Grande Bird Reservation (New Mexico) 5
- Salt River Bird Reservation (Arizona) 5
- Lakes--California 4
- Lower Klamath National Wildlife Refuge (Calif. and Or.) 4
- Oregon. State Board of Fish and Game Commissioners 4
- Wildlife conservation 4
- Birds--Conservation 3
- Cold Springs National Wildlife Refuge (Or.) 3
- Feathers 3
- Migratory birds 3
- United States. Bureau of Biological Survey 3
- Waterfowl 3