Wandering albatross

Wandering albatross
JJ Harrison (https://www.jjharrison.com.au/) · CC BY-SA 3.0 · source
Name	Wandering albatross
Status	Vulnerable
Status system	IUCN3.1
Genus	Diomedea
Species	exulans
Authority	(Linnaeus, 1758)

Wandering albatross is a large seabird in the family Diomedeidae known for the longest wingspan of any living bird and for long-distance pelagic flights across the Southern Ocean. It is an iconic species associated with historic Age of Sail voyages, Antarctic exploration, and seabird studies led by institutions such as the British Antarctic Survey and the Smithsonian Institution. Scientists from the Royal Society and universities including University of Cambridge and University of Oxford have contributed to understanding its biology and population trends.

Taxonomy and evolution

The species was described in 1758 by Carl Linnaeus and placed in genus Diomedea, whose name refers to the myth of Diomedes; taxonomy has been revised through analyses by researchers at the Natural History Museum, London and molecular labs at the Monash University and University of Tasmania. Phylogenetic studies using mitochondrial DNA and nuclear markers published in journals affiliated with the Royal Society Publishing and the American Museum of Natural History demonstrate divergence among southern albatross lineages and have prompted debate among ornithologists at the American Ornithological Society and the International Ornithologists' Union about species limits and subspecies recognition. Fossil records curated by the Smithsonian Institution and the Natural History Museum, Vienna place albatross relatives alongside Pliocene seabird assemblages documented from collections at the British Museum (Natural History). Paleontologists collaborating with the Geological Society of London have used biogeographic models to infer historical range shifts linked to climatic events studied by researchers from the Intergovernmental Panel on Climate Change and the Met Office.

Description and identification

Adults exhibit extreme wingspans documented in field guides produced by the Cornell Lab of Ornithology and monographs published by the Royal Society; measurements recorded by expeditions funded by the National Science Foundation and the Australian Antarctic Division show spans exceeding three meters. Plumage changes with age are described in atlases used by the British Trust for Ornithology and identification keys in guides from the Audubon Society; juveniles resemble descriptions in the journals of James Cook and later observers such as Alfred Russel Wallace. Morphological comparison tables in works by the World Wildlife Fund and the International Union for Conservation of Nature contrast bill shape and size against other albatrosses; museum specimens at the Natural History Museum, London and the American Museum of Natural History provide reference material. Photographs by expedition teams associated with the Royal Geographical Society and tagging studies by the Institute of Zoology, London support field identification criteria.

Distribution and habitat

The species ranges across the Southern Ocean with breeding colonies historically recorded on islands studied by explorers from the Scott Antarctic Expedition and scientists from the Antarctic Treaty Secretariat. Major breeding sites have been monitored by teams from organizations such as the Royal Society for the Protection of Birds, the New Zealand Department of Conservation, and the Australian Antarctic Division on islands including those under the jurisdiction of the United Kingdom, New Zealand, France, and Australia. Satellite-tracking projects conducted by the British Antarctic Survey, University of Cape Town, and University of São Paulo reveal foraging routes that cross maritime zones administered by the Commission for the Conservation of Antarctic Marine Living Resources and intersect fisheries regulated by the Commission for the Conservation of Southern Bluefin Tuna. Habitat use studies published with support from the European Union and the National Oceanic and Atmospheric Administration document pelagic life over nutrient-rich frontal systems influenced by currents described in research by the Scripps Institution of Oceanography and the Woods Hole Oceanographic Institution.

Behavior and ecology

Flight mechanics and energetics have been studied by teams at Massachusetts Institute of Technology and the University of Oxford using data-loggers developed in collaboration with engineers at the European Space Agency and the Jet Propulsion Laboratory. Foraging ecology research published with collaborators from the University of Cape Town and the Australian Antarctic Division shows reliance on squid and fish associated with upwelling zones studied by oceanographers at the Lamont–Doherty Earth Observatory and the National Oceanography Centre. Long-term demographic studies by the BirdLife International partnership and the Royal Society document site fidelity and age-structured survival, while behavioral ecologists at the Max Planck Society and University of Copenhagen have examined mating systems, dominance interactions, and social displays on breeding beaches recorded in footage collected by teams from the BBC Natural History Unit.

Reproduction and lifecycle

Breeding biology has been monitored in studies led by the New Zealand Department of Conservation, the Australian Antarctic Division, and research groups at the University of Auckland and the University of Tasmania showing biennial or triennial breeding intervals, delayed sexual maturity similar to life-history patterns described in seabirds studied by the Scripps Institution of Oceanography, and high parental investment documented in reports by the Royal Society. Nesting substrate and colony defense behaviors are described in field reports archived by the Royal Geographical Society and the British Antarctic Survey, while banding and resighting programs run with support from the International Union for Conservation of Nature and the Global Seabird Programme provide longevity data comparable to records held by the Guinness World Records for avian longevity. Chick growth rates analyzed in peer-reviewed papers coauthored by scientists at the University of Otago and the University of Tasmania detail provisioning patterns and fledging schedules.

Conservation status and threats

The species is listed as Vulnerable by the International Union for Conservation of Nature; conservation assessments prepared by BirdLife International and policy recommendations by the Convention on Migratory Species highlight threats from longline fisheries managed under organizations such as the Commission for the Conservation of Southern Bluefin Tuna and regional fisheries bodies including the Commission for the Conservation of Antarctic Marine Living Resources. Other pressures include climate change projections from the Intergovernmental Panel on Climate Change, invasive species eradication needs addressed by the International Union for Conservation of Nature and the New Zealand Department of Conservation, and pollution incidents monitored by the United Nations Environment Programme and the International Maritime Organization. Conservation actions promoted by NGOs like the Royal Society for the Protection of Birds, BirdLife International, and the World Wildlife Fund involve bycatch mitigation tested in trials funded by the Global Environment Facility and legislative measures implemented by national agencies such as the New Zealand Department of Conservation and the Australian Government. Category:Diomedeidae