Subject
- American black oystercatcher -- Alaska -- Harriman Fiord -- Reproduction1
- American black oystercatcher -- Behavior -- Alaska -- Harriman Fiord1
- American black oystercatcher -- Effect of human beings on -- Alaska -- Harriman Fiord1
- Brown pelican -- Behavior -- Columbia River Estuary (Or. and Wash.)1
- Brown pelican -- Behavior -- Oregon -- Sand Island (Clatsop County)1
- Brown pelican -- Effect of human beings on -- Columbia River Estuary (Or. and Wash.)1
- Brown pelican -- Effect of human beings on -- Oregon -- Sand Island (Clatsop County)1
- Brown pelican -- Effect of stress on -- Columbia River Estuary (Or. and Wash.)1
- Brown pelican -- Effect of stress on -- Oregon -- Sand Island (Clatsop County)1
- Elk -- Behavior -- Oregon -- Starkey Experimental Forest and Range1
- Elk -- Effect of human beings on -- Oregon -- Starkey Experimental Forest and Range1
- Outdoor recreation -- Environmental aspects -- Oregon -- Starkey Experimental Forest and Range1