Animals, like grizzly bears, migrate less worldwide
Migration of wild animals reduced dramatically due to human activities

Satellite-tracking data for more than 800 animals from 57 species show that animals living in areas heavily used by humans migrate between 50 and 66 percent less than animals living in untouched nature. This is due to physical barriers and altered availability of food in urbanised and cultured areas. Reduced migration might have a negative impact on the well-being of ecosystems.

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