[Length 13.5 in. Wingspan 33 in.]

This winter plumaged Bonaparte's Gull was photographed flying over Potter Point Marsh near Anchorage, Alaska, USA. Photo taken with a Nikkor 300mm ED f4.5 lens on Kodachrome 200 film. (Date: April 1987)

[Length 13.5 in. Wingspan 33 in.]

This winter plumaged Bonaparte's Gull was photographed flying over Potter Point Marsh near Anchorage, Alaska, USA. Photo taken with a Nikkor 300mm ED f4.5 lens on Kodachrome 200 film. (Date: April 1987)

[Length 13.5 in. Wingspan 33 in.]

This breeding plumaged Bonaparte's Gull was photographed at the Cape May Meadows in New Jersey, USA. Photo taken with a Nikkor 300mm EDAF f4.0 lens on Kodachrome 200 film. (Date: April 1988)

[Length 13.5 in. Wingspan 33 in.]

This Bonaparte's Gull was photographed at Port Aransas, Texas, USA. Photo taken with a AF-S VR Nikkor 300mm f/2.8G IF-ED lens + Nikkor TC17E II 1.7x Teleconverter (EFL=750mm) on a Nikon D300 camera. (Date: February 17, 2011)

[Length 13.5 in. Wingspan 33 in.]

This Bonaparte's Gull was photographed at Land of the Loon Resort, Anglin Lake, Saskatchewan, Canada. 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: June 21, 2018)

[Length 21 in. Wingspan 54 in.]

This California Gull was photographed at Antelope Island State Park, Ogden, Utah, 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: June 20, 2016)

[Length 21 in. Wingspan 54 in.]

This California Gull was photographed at a small park in southern New York, USA. Photo taken with a Nikkor 300mm ED f4.5 lens on Kodachrome 64 film. (Date: November 1979)

[Length 16 in. Wingspan 43 in.]

This Common Gull was photographed at Sand, Mainland, Shetland, Scotland, Great Britain. Photo taken with a Nikkor 300mm EDAF-S f4 lens (EFL=450mm) on a Nikon D100 camera. (Date: June 1, 2004)

[Length 16 in. Wingspan 43 in.]

This Common Gull was photographed at the Shinnecock Inlet, Shinnecock, New York. Photo equipment unknown. (Date: Unknown)