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Subject
- Birds8
- Mammals5
- Biology--Fieldwork4
- Zoological surveys4
- Animal populations3
- Bird populations3
- Birds--Ecology2
- Scientific expeditions2
- Zoological specimens2
- Amphibians1
- Animal diversity1
- Animals--Identification1
- Bighorn sheep1
- Bighorn sheep--Habitat1
- Birds--Behavior1
- Ducks1
- Elk1
- Elk--Habitat1
- Mountain animals1
- Mountain ecology1