This video from the USA says about itself:
15 March 2016
The dizzying “sky-dancing” of a Golden Eagle is a territorial and courtship display. They dive from great heights and can reach nearly 200 miles per hour. This video is featured in the new Raptor ID app from HawkWatch International in partnership with the Cornell Lab, available now for iPhone (http://apple.co/1XIT079) and Android (http://bit.ly/1L6NwkJ). Video (c) Jerry Liguori.