[Length 26.5 in. Wingspan 68.5 in.]

This captive Eagle Owl was photographed at the Rio Grande Valley Birding Festival, Harlingen, Texas, USA. Photo taken with a AF-S DX VR Zoom-Nikkor 18-200mm f/3.5-5.6G IF-ED [II] lens on a Nikon D3200 camera. (Date: November 8, 2014)

[Length 6.75 in. Wingspan 16 in.]

This Flammulated Owl was photographed at the Convention Center gardens, South Padre Island, Texas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens (EFL=450mm) on a Nikon D3200 camera. (Date: February 25, 2013)

[Length 6.75 in. Wingspan 16 in.]

This Flammulated Owl was photographed at the Convention Center gardens, South Padre Island, Texas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens (EFL=450mm) on a Nikon D3200 camera. (Date: February 25, 2013)

[Length 6.75 in. Wingspan 16 in.]

This Flammulated Owl was photographed at the Convention Center gardens, South Padre Island, Texas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens (EFL=450mm) on a Nikon D3200 camera. (Date: February 25, 2013)

[Length 27 in. Wingspan 52 in.]

The symbol of the boreal forests of Canada and the northern US, the Great Gray Owl is the largest of all the North American owls. This one was photographed during an extreme southern irruption in the winter of 1979 at Lloyd Harbor, Long Island, New York, USA. Photo taken with a Soligor 300mm f5.6 lens on Ektachrome 200 film. (Date: January 1979)

[Length 22 in. Wingspan 44 in.]

This Great Horned Owl was photographed at Quivira NWR, Great Bend, Kansas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens + Nikkor TC14E II 1.4x Teleconverter (EFL=630mm) on a Nikon D300 camera. (Date: March 16, 2010)

[Length 22 in. Wingspan 44 in.]

This captive Great Horned Owl was photographed at a wildlife rehabilitation center in central New Jersey, USA. Photo taken with a 50mm f1.4 Pentax SMC Macro Lens on Kodachrome 64 film (photo courtesy Art and Hanna Richard). (Date: Unknown)

[Length 22 in. Wingspan 44 in.]

This fledgling Great Horned Owl was photographed at an arboretum in central New Jersey, USA. Photo taken with a Soligor 300mm f5.6 lens on Kodachrome 64 film. (Date: May 1978)