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- Universities and colleges--Departments 74
- Hunting 46
- Herons 29
- Ducks 26
- Bears 24
- Birds--Nests 23
- Gulls 19
- Wildlife refuges 19
- Wood warblers 19
- Woodpeckers 19
- Grebes 17
- Thrushes 17
- Feathers 16
- Pelicans 16
- Salmon 15
- Sparrows 15
- Owls 14
- Hawks 11
- Squirrels 11
- Islands--Alaska 10