[Length 26 in. Wingspan 58 in.]

This Glaucous-winged Gull was photographed at Attu Island, AK, USA. Photo taken with a Nikkor ED 300mm f4.5 lens on Kodachrome 200 film. (Date: May 1988)

[Length 26 in. Wingspan 58 in.]

This adult Glaucous-winged Gull in flight was photographed on Attu Island, Alaska, USA. Photo taken with a Nikkor 300mm ED f4.5 lens on Kodachrome 200 film. (Date: May 1984)

[Length 26 in. Wingspan 58 in.]

This immature Glaucous-winged Gull in flight was photographed along Monterey Bay in California, USA. Photo taken with a Nikkor 300mm ED f4.5 lens on Kodachrome 64 film. (Date: November 1981)

[Length 30 in. Wingspan 65 in.]

Great Black-backed Gulls occur in eastern North America and most of Europe. In North America it is strictly coastal, and is the largest gull found along the eastern shores of Canada and the US. Although it easily dominates the Herring Gulls with which it normally associates, it is wary of people and will fly away before the Herring Gulls when a mixed flock is approached. This one, looking a little bored with it all, was photographed at Manasquan Inlet, New Jersey, USA. Photo taken with a Nikkor 300mm ED f4.5 lens on Kodachrome 64 film. (Date: December 1983)

[Length 30 in. Wingspan 65 in.]

This Great Black-backed Gull was photographed at Baltasound, Unst, Shetland, Scotland, Great Britain. Photo taken with a Nikkor 300mm EDAF-S f4 lens (EFL=450mm) on a Nikon D100 camera. (Date: June 6, 2004)

[Length 19 in. Wingspan 51 in.]

This Heermann's Gull in flight was photographed along the coast near Santa Maria, California, USA. Photo taken with a Nikkor 300mm EDAF f4.0 lens on Kodachrome 200 film. (Date: September 1997)

[Length 19 in. Wingspan 51 in.]

This Heermann's Gull was photographed along the coast near Santa Maria, California, USA. Photo taken with a Nikkor 300mm EDAF f4.0 lens on Kodachrome 200 film. (Date: September 1997)

[Length 19 in. Wingspan 51 in.]

This immature Heermann's Gull was photographed at Morro Bay, California, USA. Photo taken with a Nikkor 300mm EDAF f4.0 lens on Kodachrome 200 film. (Date: November 1997)