[Length 18 in. Wingspan 43 in.]

The Northern Harrier occurs throughout North America in wetlands and open, grassy fields. The combination of long wings and tail, and its habit of flying and gliding low to the ground with its wings held in an upward "vee", identify it at a distance. This one was photographed along the edge of a coastal marsh in southern New Jersey, USA. Photo taken with a Nikkor 300mm ED f4.5 lens on Kodachrome 64 film. (Date: September 1981)

[Length 15 in. Wingspan 34 in.]

This Broad-winged Hawk was photographed during fall migration at Sandy Hook, New Jersey, USA. Photo taken with a Nikkor 300mm EDAF f4.0 lens on Kodachrome 200 film. (Date: May 1996)

[Length 15 in. Wingspan 34 in.]

This first winter Broad-winged Hawk was photographed at Estero Llano Grande State Park, Weslaco, Texas, USA. Photo taken with a AF-S VR Zoom-Nikkor 80-400mm f/4.5-5.6G IF-ED lens on a Nikon D7100 camera. (Date: February 6, 2015)

[Length 15 in. Wingspan 34 in.]

This dark phase Broad-winged Hawk was photographed at Jake's Landing, New Jersey, USA. Photo taken with a Nikkor 300 lens on Ektachrome 800 film. (Date: May 1987)

[Length 19.5 in. Wingspan 44 in.]

This Common Black Hawk was photographed at the Panama Canal Upper Locks, Colon, Panama. Photo taken with a AF-S VR Zoom-Nikkor 70-300mm f/4.5-5.6G IF-ED lens (EFL=405mm) on a Nikon D7000 camera. (Date: August 5, 2011)

[Length 19.5 in. Wingspan 44 in.]

This Mangrove Common Black Hawk was photographed at Santa Clara Beach, El Valle de Anton, Panama. Photo taken with a AF-S DX VR Zoom-Nikkor 18-200mm f/3.5-5.6G IF-ED [II] lens (EFL=300mm) on a Nikon D7000 camera. (Date: August 13, 2011)

[Length 14 (Male) to 20 (Female) in. Wingspan 29 (M) to 37 (F) in.]

This Cooper's Hawk was photographed at the Andrews Bird Viewing Trail, Andrews, Texas, USA. Photo taken with a Nikkor 70-200mm EDAF-S VR f2.8 lens + Nikkor TC14E II 1.4x Teleconverter (EFL=420mm) on a Nikon D200 camera. (Date: November 6, 2007)

[Length 14 (Male) to 20 (Female) in. Wingspan 29 (M) to 37 (F) in.]

This Cooper's Hawk was photographed at a residentail neighborhood, Midland, Texas, USA. Photo taken with a Nikkor 70-200mm EDAF-S VR f2.8 lens + Nikkor TC14E II 1.4x Teleconverter (EFL=420mm) on a Nikon D200 camera. (Date: December 29, 2007)