Germany's iconic swans in Hamburg sit nestled in their home - the waters of the Alster River. But the city's beloved creatures will soon be transported to their winter haven, as part of an annual tradition that dates back hundreds of years. Since 1818, the birds have been taken to a nearby lake, which is a better environment for them to find food and survive the cold. A 'swan father' like Olaf Niess is designated to look after the flock.
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