by Terry Devitt

Field biologists have long been trying to discover exactly where migratory animals go on their seasonal journeys. In a world of rapidly vanishing habitats, such insight would help those trying to protect sensitive lands. With more than 20 percent of the world's forests having disappeared in the past 300 years, habitat loss ranks as one of the biggest threats to wildlife, especially migratory birds, which rely on two locations—a winter and a summer home—for shelter and food. continued...

Photo: Courtesy of Larry Master/NatureServe

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Reprinted from the HHMI Bulletin, September 2002,
pages 6-7. ©2002 Howard Hughes Medical Institute