Northern Harrier is one of the Bitterroot's most common birds of prey
https://ravallirepublic.com/news/local/article_e889a9d5-8932-5470-8cfb-1c1dbeb814ec.htmlOnce commonly called a marsh hawk, the Northern Harrier is one of the Bitterroot Valley's most common birds of prey. It stands about 12-inches tall. It is easily identified by its white rump patch, which is visible as the bird flies away from a human observer.
Courtesy of Heather Tellock