The great night heron mystery at the National Zoo

In Animals, Research News, Science & Nature, Video / 20 October 2014

Each year, a mysterious group of night herons flock to Smithsonian’s National Zoo. Then, they vanish. In episode three of our series, we go behind the scenes with the zoo’s caretakers as they investigate why.

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Tags: birds, conservation biology, migratory birds, Smithsonian's National Zoo