Subject
- Caspian tern -- Food -- Columbia River Estuary (Or. and Wash.)5
- Caspian tern -- Ecology -- Columbia River Estuary (Or. and Wash.)4
- Double-crested cormorant -- Ecology -- Columbia River Estuary (Or. and Wash.)3
- Double-crested cormorant -- Food -- Columbia River Estuary (Or. and Wash.)3
- Colonial birds -- Ecology -- Columbia River Estuary (Or. and Wash.)2
- Brandt's cormorant -- Columbia River Estuary (Or. and Wash.)1
- Brandt's cormorant -- Food -- Columbia River Estuary (Or. and Wash.)1
- Caspian tern1
- Caspian tern -- Columbia River Estuary (Or. and Wash.) -- Reproduction1
- Caspian tern -- Mortality -- Columbia River Estuary (Or. and Wash.)1
- Caspian tern -- Predators of -- Columbia River Estuary (Or. and Wash.)1
- Caspian tern -- Reproduction -- Columbia River Estuary (Or. and Wash.)1
- Colonial birds1
- Columbia River Estuary (Or. and Wash.)1
- Cormorants -- Ecology -- Columbia River Estuary (Or. and Wash.)1
- Cormorants -- Food -- Columbia River Estuary (Or. and Wash.)1
- Double-crested cormorant -- Behavior -- Columbia River Estuary (Or. and Wash.)1
- Double-crested cormorant -- Columbia River Estuary (Or. and Wash.)1
- Double-crested cormorant -- Wintering -- Columbia River Estuary (Or. and Wash.)1
- Fatty acids -- Analysis1