Herring Gull: Larus argentatus
- Gallery of photographs of this species.
- http://hjem.get2net.dk/bofd/Gulls/Herring%20Gull/soelvmaage.htm

Great Black-backed Gull: Larus marinus
- Gallery of photographs of this species.
- http://hjem.get2net.dk/bofd/Gulls/Great%20Black-backed%20Gull/svartbag.htm

Common Black-headed Gull: Larus ridibundus
- Gallery of photographs of this species.
- http://hjem.get2net.dk/bofd/Gulls/Common%20Black-headed%20Gull/haettemaage.htm

Larus hyperboreus: Glaucous Gull
- Gallery of photographs of this species.
- http://www.birds-of-denmark.dk/graamaage_3.htm

Larus fuscus intermedius: Lesser Black-backed Gull
- Several photographs of this species.
- http://www.birds-of-denmark.dk/kattegatsildemaage.htm

Little Gull: Larus minutus
- Several photographs of this species.
- http://hjem.get2net.dk/bofd/Gulls/Little%20Gull/Dvaergmaage.htm

Mew Gull: Larus canus
- Several photographs of this species.
- http://hjem.get2net.dk/bofd/Gulls/Mew%20Gull/stormmaage.htm

Larus chaninnans chaninnans
- Several photographs of the Black Sea Yellow-legged Gull.
- http://www.birds-of-denmark.dk/kaspisk-steppemaage.htm

Larus melanocephalus
- Several photographs of the Mediterranean Gull with a sound file.
- http://www.birds-of-denmark.dk/sorthovedet_maage_1.htm

Larus glaucoides (Iceland Gull)
- Close-up photos of this species.
- http://www.birds-of-denmark.dk/hvidvinget-maage_1.htm

Mew Gull (Larus canus)
- Photos, identification tips, range maps, and taxonomy chart.
- http://www.mbr-pwrc.usgs.gov/id/framlst/i2930id.html

Heermann's Gull (Larus heermanni)
- Identification tips, Christmas Bird Count Map, taxonomy chart, and photos of this species.
- http://www.mbr-pwrc.usgs.gov/id/framlst/i0570id.html

Black-backed gull (Larus dominicanus)
- Illustration and brief history of this native New Zealand bird.
- http://nzbirds.com/birds/blackbackedgull.html

Larus delawarensis (Ring-Billed Gull)
- Species account includes photos, a sound file, and facts about this bird's food habits and behavior.
- http://animaldiversity.ummz.umich.edu/site/accounts/information/Larus_delawarensis.html

Little Gull (Larus minutus)
- Species account describes the physical traits, reproduction, ecology, and behavior of this species. Includes a photo and range map.
- http://www.aquatic.uoguelph.ca/birds/speciesacc/accounts/gulls/minutus/account.htm

Larus glaucescens (Glaucous-winged Gull)
- Describes the range, habitat, physical appearance, reproduction, and behavior of this species.
- http://animaldiversity.ummz.umich.edu/site/accounts/information/Larus_glaucescens.html

Glaucous Gull (Larus hyperboreus)
- Provides a photo of this bird and facts about its physical appearance, range, breeding, and diet. Includes a range map and sound file.
- http://www.aquatic.uoguelph.ca/birds/speciesacc/accounts/gulls/hyperbor/account.htm

California Gull (Larus californicus)
- Species account describes this bird's physical traits, distribution, reproduction, ecology, and behavior. Includes a sound file.
- http://www.aquatic.uoguelph.ca/birds/speciesacc/accounts/gulls/californ/account.htm

Herring Gull (Larus argentatus)
- Image, distribution maps, and facts about the habitat and physical traits of this bird.
- http://www.nenature.com/HerringGull.htm

Laughing Gull (Larus atricilla)
- Photos, range maps, sound file, identification tips, and life history.
- http://www.mbr-pwrc.usgs.gov/id/framlst/i0580id.html

Franklin's Gull (Larus pipixcan)
- Provides photo, distribution map, and data on this bird's reproduction, ecology, and behavior.
- http://www.aquatic.uoguelph.ca/birds/speciesacc/accounts/gulls/pipixcan/account.htm

Bonaparte's Gull (Larus philadelphia)
- Offers a description of the adult, juvenile, and nestling of this species. Includes a photo and a range map.
- http://www.aquatic.uoguelph.ca/birds/speciesacc/accounts/gulls/philadel/account.htm

Atlantic Yellow-legged Gulls
- Photographs and notes on these species found on the Atlantic (Canaries, Morocco, Portugal, Spain) by Nick Rossiter.
- http://www.nrossiter.supanet.com/ylg/

Gulls
- Images and discussion of several unusual gulls from Texas by Greg Lasley.
- http://home.earthlink.net/~glasley/gullix.html

Yellow-legged Gull
- Photographs and notes of the bird at St. John's, Newfoundland in 1997.
- http://www.cs.mun.ca/~dave/ylgu.html

Bob Lewis's Gull Site
- 326 photos of unusual and often controversial gulls from the eastern United States and elsewhere.
- http://www.bway.net/~lewis/birds/gulls.html