Because of the very long distance to the cliff aerie this video suffers from atmospheric distortions, however, the essence of the prairie falcons is not lost for the dedicated raptor enthusiast. It is estimated that the nest became active within the last week. While filming the activity at the site, Peter watched both parents suddenly plunge from the rock shelf in pursuit of a raven that had wandered too close to the nest. The female returned quickly, but the male falcon made a lightning-fast stoop after the large corvid. They vanished over the horizon within seconds. The male returned within a few minutes and assumed a lookout position on a nearby outcropping of rocks. Stay tuned for more on this well-established falcon aerie with a stunning view of Denver and all of its suburbs to the east.