[Length 33 in. Wingspan 52 in.]

This Double-crested Cormorant was photographed on one of the islands of the Chesapeake Bay Bridge Tunnel in Virginia, USA. Photo taken with a Nikkor 300mm EDAF f4.0 lens on Kodachrome 200 film. (Date: May 1990)

[Length 33 in. Wingspan 52 in.]

This Double-crested Cormorant was photographed at Bolivar Peninsula, Texas, USA. Photo taken with a Nikkor 70-200mm EDAF-S VR f2.8 lens + Nikkor TC14E II 1.4x Teleconverter (EFL=405mm) on a Nikon D100 camera. (Date: May 9, 2006)

[Length 33 in. Wingspan 52 in.]

This Double-crested Cormorant in flight was photographed at the Andrews Bird Viewing Trail, Andrews, Texas, USA. 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: November 26, 2008)

[Length 33 in. Wingspan 52 in.]

This Double-crested Cormorant was photographed at Lake Balmorhea, Balmorhea, Texas, USA. 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 D200 camera. (Date: December 19, 2008)

[Length 33 in. Wingspan 52 in.]

This Double-crested Cormorant was photographed at Boca Chica Beach, Brownsville, Texas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens (EFL=450mm) on a Nikon D7000 camera. (Date: January 23, 2012)

[Length 33 in. Wingspan 52 in.]

This Double-crested Cormorant was photographed at Boca Chica Beach, Brownsville, Texas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens (EFL=450mm) on a Nikon D7000 camera. (Date: January 23, 2012)

[Length 36 in. Wingspan 63 in.]

This immature Great Cormorant was photographed on a piling in Barnegat Inlet, New Jersey, USA. Photo taken with a Nikkor 300mm ED f4.5 lens on Kodachrome 200 film. (Date: September 1982)

[Length 25 in. Wingspan 40 in.]

This Neotropic Cormorant was photographed at Bolivar Peninsula, Texas, USA. Photo taken with a Nikkor 70-200mm EDAF-S VR f2.8 lens + Nikkor TC20E II 2.0x Teleconverter (EFL=570mm) on a Nikon D100 camera. (Date: May 9, 2006)