Subject
- Alfalfa -- Phenology1
- Anthocyanins1
- Bird populations -- Klamath National Forest (Calif. and Or.)1
- Bird populations -- West (U.S.) -- Geographical distribution1
- Birds -- Klamath National Forest (Calif. and Or.) -- Infancy1
- Burrowing owl -- California, Southern -- Reproduction1
- Burrowing owl -- Ecology -- California, Southern1
- Burrowing owl -- Habitat -- California, Southern1
- Chinook salmon -- Columbia River -- Age1
- Chinook salmon -- Columbia River -- Size1
- Chinook salmon fisheries -- Columbia River1
- Coloring matter in food1
- Food preferences -- Asia -- Cross-cultural studies1
- Mallard -- Habitat -- Oregon -- Willamette River Valley1
- Mallard -- Klamath National Forest (Calif. and Or.)1
- Mallard -- Nests -- Oregon -- Willamette River Valley1
- Non-alcoholic beverages -- Asia -- Cross-cultural studies1
- Northern spotted owl -- Climatic factors -- Oregon1
- Northern spotted owl -- Climatic factors -- Washington (State)1
- Northern spotted owl -- Habitat -- Oregon1