| 11. | Both mute and whooper swans appear to be represented in ancient Greek and Egyptian art.
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| 12. | Species inhabiting the park include Siberian jay, pine grosbeak, Bohemian waxwing, common crane and whooper swan.
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| 13. | The whooper swan, the bar-tailed godwit and the mallard have been seen above 20, 000 feet.
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| 14. | Whooper swans from Iceland frequently join them.
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| 15. | The whooper swan and tundra swan are wholly migratory, and the trumpeter swans are almost entirely migratory.
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| 16. | R�ppell's vultures, whooper swans, alpine chough, and common cranes all have flown more than above sea level.
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| 17. | "' Lake Samilpo "'is an 80 ha greater white-fronted geese, mute swans, whooper swans and red-crowned cranes.
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| 18. | These include swan geese, mute swans, whooper swans, Baikal teals, Steller's sea-eagles, red-crowned cranes and Saunders's gulls.
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| 19. | Whooper swans voted with head movements.
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| 20. | The solitary eagle is contrasted with whooper swans landing in Scotland after a 1, 600-kilometre journey from Iceland.
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