Once down to only 80 in the wild, the Florida Grasshopper Sparrow is at risk of extinction. Biologist Fabiola ‘Fabby’ Baeza-Tarin and an unexpected team work together to protect the sparrows, their shrinking habitat, and the headwaters of the Everglades. America's most endangered songbird is saving a landscape. Explore the World with National Geographic subscriptions: http://natgeo.com/ytngmagazine ➡ Subscribe: http://bit.ly/NatGeoSubscribe And check out more National Geographic series and