American Kestrel  [Falco sparverius]
The American Kestrel (Falco sparverius) is a small falcon. This bird was formerly known in North America as the Sparrow Hawk. This name was misleading because it implied a connection with the Eurasian Sparrowhawk Accipiter nisus, which is unrelated - the...
http://www.kiwifoto.com/galleries/birds/american_kestrel/ - Last revised: Nov 12, 2009

Merlin  [Falco columbarius]
The Merlin (Falco columbarius) is a smallish falcon that breeds in northern North America, Europe and Asia. In North America it was once and sometimes still is colloquially called "pigeon hawk" though being a falcon it is not very closely related to true...
http://www.kiwifoto.com/galleries/birds/merlin/ - Last revised: Apr 28, 2010

Peregrine Falcon  [Falco peregrinus]
The Peregrine Falcon (Falco peregrinus), also known simply as the Peregrine, and historically also as "Duck Hawk" in North America, is a cosmopolitan bird of prey in the family Falconidae. It is a large-sized falcon, females being larger and about the siz...
http://www.kiwifoto.com/galleries/birds/peregrine_falcon/ - Last revised: Nov 12, 2009

Prairie Falcon  [Falco mexicanus]
The Prairie Falcon (Falco mexicanus) is a medium-sized falcon of western North America.It is about the size of a Peregrine Falcon or a crow, with an average length of 40 cm (16 in), wingspan of 1 metre (40 in), and weight of 720 g (1.6 lb). As in all falc...
http://www.kiwifoto.com/galleries/birds/prairie_falcon/ - Last revised: Apr 22, 2009