| 11. | Nesting species include tundra swan, mallard, green-winged teal, common eider, Canada goose, and rock ptarmigans.
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| 12. | Hundreds of tundra swans have died from lead poisoning.
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| 13. | These include tundra swan, snow geese, and Canada geese.
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| 14. | Tundra swans and Canada geese winter at the park as do bufflehead, mallard and wood ducks.
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| 15. | Trumpeters are protected throughout their migration range, while hunting tundra swans is legal in several states.
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| 16. | Archaeologists have found Canada geese and Tundra swans.
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| 17. | The tundra swan is not considered threatened by the IUCN due to its large range and population.
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| 18. | The refuge encompasses the migratory birds each year including species such as bald eagle and tundra swan.
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| 19. | We have seen at least six during the day, as well as trumpeting tundra swans flying overhead.
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| 20. | The whooper swan and tundra swan are wholly migratory, and the trumpeter swans are almost entirely migratory.
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