Southern fulmar

Southern fulmar
JJ Harrison (https://www.jjharrison.com.au/) · CC BY-SA 3.0 · source
Name	Southern fulmar
Status	LC
Status system	IUCN3.1
Genus	Fulmarus
Species	glacialoides
Authority	(Smith, 1840)

Southern fulmar The Southern fulmar is a medium-sized Procellariiformes seabird of the family Procellariidae primarily associated with the Antarctic Peninsula and surrounding Southern Ocean islands. It is a colonial, pelagic species known for long-distance foraging, seasonal breeding on ice-free cliffs, and a diet dominated by krill and small fish. The species has been a focus of studies by researchers from institutions such as the British Antarctic Survey, Australian Antarctic Division, and the National Oceanic and Atmospheric Administration.

Taxonomy and naming

The Southern fulmar was described by Andrew Smith in 1840 and placed in the genus Fulmarus, which also contains the Northern fulmar. Molecular phylogenetic work by teams at the Natural History Museum, London and the Smithsonian Institution has clarified relationships within Procellariidae, situating Fulmarus among other tubenosed seabirds including the shearwaters and petrels. The specific epithet glacialoides reflects early observers' association with glacial environments and the species' Antarctic range recorded during voyages of exploration such as those led by James Clark Ross and contemporaries from the era of Antarctic exploration.

Description

Adults measure about 45 cm in length with a wingspan near 110 cm and display a sturdy, gull-like profile. Plumage is mainly pale grey and white, with a darker mantle and contrasting pale head; the bill is short and yellow with a darker tip, bearing the distinctive tubular nostrils characteristic of Procellariiformes. Juveniles are generally duller with more extensive flecking and brownish tones similar to descriptions from collections at the American Museum of Natural History and the Royal Ontario Museum. Morphological comparisons have been published in monographs from the Zoological Society of London and field guides used by researchers aboard vessels operated by the Scott Polar Research Institute.

Distribution and habitat

The species breeds on ice-free cliffs and rocky outcrops on islands and coastal zones across the Southern Ocean, including populations on the South Shetland Islands, South Georgia, Kerguelen Islands, Prince Edward Islands, and parts of the Antarctic Peninsula. Outside the breeding season it ranges widely across subantarctic and Antarctic waters, tracked in satellite tagging studies by groups at the Monterey Bay Aquarium Research Institute and the Scottish Association for Marine Science. Southern fulmars exploit pelagic foraging grounds influenced by fronts such as the Antarctic Convergence and currents including the Antarctic Circumpolar Current and are often recorded in association with marine mammal feeding events involving Orcinus orca and Leopard seal presence noted by field teams from the World Wildlife Fund.

Behavior and ecology

Southern fulmars are colonial nesters forming dense aggregations on cliffs; they are highly vocal and exhibit behaviour documented in field studies by Peter R. Mawson and observers from the Commonwealth Scientific and Industrial Research Organisation. Their flight is characterized by steady gliding interspersed with wingbeats, commonly seen following research vessels from institutions such as the National Oceanography Centre and the Scripps Institution of Oceanography. Diet consists mainly of Antarctic krill, small notothenioid fishes, and cephalopods, with prey capture by surface seizing and occasional shallow dives; feeding ecology has been quantified in work supported by the Scientific Committee on Antarctic Research and journals like Nature and Journal of Avian Biology. Predators and competitors include skuas such as the Brown skua, giant petrels like Southern giant petrel, and avian scavengers recorded by expeditions led by explorers associated with the Royal Geographical Society.

Breeding and life cycle

Breeding occurs during the austral summer, with colonies forming on rock ledges and tussock-covered slopes; classic breeding sites have been surveyed by teams from the British Antarctic Survey and the Institute of Antarctic and Southern Ocean Studies. Pairs are generally monogamous within a season and often show site fidelity across years; clutch size is typically a single egg laid in a shallow scrape lined with stones and down. Incubation, shared by both parents, lasts about 45–50 days, followed by a nestling period during which parents provision the chick with regurgitated oil-rich food—behavior recorded in long-term studies by researchers at the Biodiversity Research Institute and universities including University of Cambridge and University of Cape Town. Chicks fledge after roughly two months and juveniles disperse widely, with survival and recruitment rates modeled in demographic studies from the British Antarctic Survey and published in the Journal of Animal Ecology.

Conservation status

The IUCN lists the Southern fulmar as Least Concern, reflecting its large range and substantial population documented by surveys from the Commission for the Conservation of Antarctic Marine Living Resources and regional monitoring coordinated by the Convention on the Conservation of Antarctic Marine Living Resources. Threats include climate-driven shifts in sea ice and krill abundance investigated by the Intergovernmental Panel on Climate Change and scientists at the Institute of Marine Research, as well as risks from fisheries interactions reported by the Food and Agriculture Organization and occasional oil pollution incidents recorded by the International Maritime Organization. Conservation measures benefit from protected areas established under the Antarctic Treaty System and ongoing research collaborations among institutions such as the University of Tasmania and the Nelson Mandela University.

Category:Fulmarus