Dolphin Gull

Identification

The dolphin gull is a distinctive coastal gull native to southern South America. It is characterized by greyish plumage on its body, with darker grey feathers on its wings, creating a subtle but noticeable contrast. Despite occasional confusion with New Zealand's red-billed gull—an unrelated species—the dolphin gull is readily identifiable once you know what to look for. The species is named after the English explorer William Scoresby (1789–1857), whose name is preserved in both its scientific designation, Leucophaeus scoresbii, and its now-obsolete common name, Scoresby's gull.

Range & Habitat

The dolphin gull is found around the coasts of Chile, Argentina, and the Falkland Islands, making it a characteristic bird of southern South American shores. The species occasionally wanders as a vagrant to South Georgia and the South Sandwich Islands. True to its name as a coastal specialist, it inhabits rocky, muddy, and sandy shores, showing a particular affinity for areas near seabird colonies. Dolphin gulls are also commonly spotted around human settlements including slaughterhouses, sewage outflows, and farmyards, where food opportunities abound.

Behaviour & Diet

The dolphin gull is an aggressive scavenger and opportunistic predator with an impressively varied diet. It feeds on carrion, offal, bird eggs, nestlings, marine invertebrates, and whatever natural food becomes available. The species has evolved a cunning strategy for nest raiding: when human disturbance causes adult seabirds to abandon their nests temporarily, dolphin gulls swiftly move in to exploit the undefended eggs and chicks. Research has shown that excluding humans from cormorant nesting areas significantly improves the cormorants' reproductive success—a testament to the dolphin gull's predatory impact. These gulls also take advantage of marine mammal activities, scavenging dead fish, placentae, and faeces, which serve as major attractants.

Dolphin gulls breed in small colonies of up to 200 pairs, typically nesting on low cliffs, sand or shingle beaches, headlands, or marshy depressions. They lay two to three eggs in December, with chicks fledging by March. Interestingly, older chicks gather together in creches, a communal arrangement that may provide protection and social benefits during the critical fledging period.

Best Time & Places to See It

The dolphin gull's breeding season peaks in December through March in the Southern Hemisphere, making this an ideal window for observing nesting birds and family groups. Year-round residents are found throughout coastal Chile and Argentina, with particularly reliable sightings in the Falkland Islands. Look for them along rocky and sandy shorelines, near active seabird colonies, and in human-modified landscapes such as coastal farmyards or waste areas where food is plentiful.

Photography Tips

Photographing dolphin gulls rewards patience and attention to their scavenging behaviour. Position yourself near seabird colonies during breeding season to capture interactions and predation attempts, or wait near food sources such as marine mammal haul-outs where they congregate. The contrast between their pale grey body plumage and darker wing feathers provides good compositional opportunities. Early morning and late afternoon light will best reveal the subtle tonal gradations that distinguish this species. Remember that the IUCN lists this species as "Least Concern" with a stable population, so ethical wildlife photography practices remain important for responsible wildlife tourism.