A humble river in northwest Germany shows itself to be a natural paradise, where Banded Demoiselle dragonflies flutter on sapphire wings over the watermeadows. Dagmar HilfertRüppell and Georg Rüppell film these butterflylike flying jewels in breathtaking slowmotion. They also reveal the fishing techniques of the kingfishers, and of the dippers, the only songbirds that swim and hunt underwater.


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