| 1. | All told, some 300 whoopers exist in captivity and wild flocks.
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| 2. | A non-migratory flock of about 70 whoopers lives in Florida.
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| 3. | The Texas flock is the last wild flock of whoopers.
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| 4. | It is a habitat for whooper swans, moorhens and little grebes.
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| 5. | Threatened species present here include whooper swan and Special Area of Conservation.
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| 6. | Over the ears, the birds would establish a new population of whoopers.
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| 7. | Trumpeter swans have similar calls to whooper swans and Bewick's swans.
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| 8. | At the river mouth species of birds include mute and whooper swans occur.
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| 9. | Whooper swans have also been known to breed here.
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| 10. | Significant species wintering here include mute swan, whooper swan and tundra swan.
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