MAMMOTH HOT SPRINGS, WY – Sunday, September 25, visitors are invited to celebrate the spectacle of raptor (bird of prey) migration in Yellowstone National Park’s Hayden Valley with Yellowstone Raptor Initiative volunteer Katy Duffy. The Hayden Valley Hawk Watch is a spectacular opportunity to observe and learn about raptors, their ecology, and their migration strategies. https://www.nps.gov/yell/learn/news/16066.htm

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