Here is a video of these falcons mating high on a cliff overlooking Devil's Slide. Sorry about the camera shake and noise during the action. I got rattled by the machine gun sound of all the photographers' camera shutters going off drowning out the sounds made by the birds. As in most raptors, males are smaller than females. The buffy underparts and broad facial stripe suggest these are F. p. anatum, the breeding population in temperate North America. It is sometimes called the American Peregrine Falcon and formerly called the "Duck Hawk." In fact the word "anatum" means "duck." This subspecies was the subject of an intense recovery after being listed as an endangered species, but captive breeding and banning of DDT in most of North America have been successful in bringing the species to a self-sustaining recovery. It was removed from the endangered species list in 1999.