[Length 15.5 (Male) to 19.5 (Female) in. Wingspan 35 (M) to 43 (F) in.]

This Prairie Falcon was photographed at Midland, TX. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens + Nikkor TC20E II 2.0x Teleconverter (EFL=900mm) on a Nikon D300 camera. (Date: January 3, 2010)

[Length 21 (Male) to 26 (Female) in. Wingspan 40 (M) to 46 (F) in.]

This Northern Goshawk was photographed at Rocky Mountain National Park, Estes Park, CO. Photo taken with a AF-S VR Zoom-Nikkor 70-300mm f/4.5-5.6G IF-ED lens (EFL=450mm) on a Nikon D200 camera. (Date: April 22, 2009)

[Length 21 (Male) to 26 (Female) in. Wingspan 40 (M) to 46 (F) in.]

This Northern Goshawk was photographed on a nest in Garden Canyon at Fort Huachuca in Sierra Vista, Arizona. Photo taken with a Nikkor 300mm ED f4.5 lens on Ektachrome 200 film. (Date: May 1985)

[Length 20 (Male) to 25 (Female) in. Wingspan 50 (M) to 64 (F) in.]

This immature Gyrfalcon was photographed as a winter visitor (January-February 2002) in Lubbock, Texas. This is the southernmost record of Gyrfalcon in the United States. Photo taken using eyepiece projection on a Celestron C5 1250mm f10 telescope with a 26mm Plossl eyepiece on Kodachrome 200 film pushed to 800. (Date: February 2002)

[Length 20 (Male) to 25 (Female) in. Wingspan 50 (M) to 64 (F) in.]

This immature Gyrfalcon was photographed as a winter visitor (January-February 2002) in Lubbock, Texas. This is the southernmost record of Gyrfalcon in the United States. Photo taken with a Nikkor 300mm EDAF f4 lens on Kodachrome 200 film. (Date: February 2002)

[Length 20 (Male) to 25 (Female) in. Wingspan 50 (M) to 64 (F) in.]

This immature Gyrfalcon was photographed as a winter visitor (January-February 2002) in Lubbock, Texas. This is the southernmost record of Gyrfalcon in the United States. Photo taken with a Nikkor 300mm EDAF f4 lens on Kodachrome 200 film. (Date: February 2002)

[Length 20 (Male) to 25 (Female) in. Wingspan 50 (M) to 64 (F) in.]

This immature Gyrfalcon was photographed as a winter visitor (January-February 2002) in Lubbock, Texas. This is the southernmost record of Gyrfalcon in the United States. Photo taken with a Nikkor 300mm EDAF f4 lens on Kodachrome 200 film. (Date: February 2002)

[Length 20 (Male) to 25 (Female) in. Wingspan 50 (M) to 64 (F) in.]

This immature Gyrfalcon was photographed as a winter visitor (January-February 2002) in Lubbock, Texas. This is the southernmost record of Gyrfalcon in the United States. Photo taken using eyepiece projection on a Celestron C5 1250mm f10 telescope with a 26mm Plossl eyepiece on Kodachrome 200 film pushed to 800. (Date: February 2002)