Albatross guide: species facts, diet, threats they face - and their massive wingspan
Spending most of their lives at sea and covering vast distances, little was known about these elusive seabirds until relatively recently. Find out more about albatrosses in this expert guide from the RSPB, including the threats they face, and their outlook for the future.
What are albatrosses?
Albatrosses are stunning, long-lived seabirds belonging to the order Procellariiformes (or tubenoses), which also includes fulmars, petrels, and shearwaters. Learn more about this impressive and enigmatic seabird in this guide by the RSPB:
What is the albatrosses' wingspan?
Some albatross species are exceedingly large, with the wandering albatross having the largest wingspan of any extant bird (3 metres!). They spend much of their lives entirely at sea, soaring thousands of kilometres in the pursuit of food, typically coming ashore only to breed.
How many species of albatross are there?
There are 22 species of albatross found across the world. The can divided into four genera, including: the great albatrosses (Diomedea), the North Pacific albatrosses (Phoebastria), the mollymawks (Thalassarche), and the sooty albatrosses (Phoebetria).
Where do albatrosses live?
Most albatross species range across the Southern Hemisphere from Antarctica to South America, southern Africa, and Australia and New Zealand. The four North Pacific albatrosses are an exception, three of which occur in the North Pacific from Hawaii to Japan, California, and Alaska. The Waved albatross breeds in the Galápagos Islands and feeds off the coast of South America.
How do we track albatrosses?
Our knowledge of the at-sea distribution and behaviour of albatrosses has been greatly enhanced by use of satellite telemetry. Given these birds can stay at sea for months at a time and travel across vast distances, attaching tracking devices to individual birds provides invaluable insight into where they feed and potentially interact with fishing vessels, thus guiding conservation action. You can see an example of how the movements of juvenile grey-headed albatross from South Georgia were tracked here.
What do albatrosses eat?
Albatrosses feed primarily on squid and small fish which they catch from the surface of the water, as well as the offal discarded from fishing vessels as they process their catch. They may also scavenge on floating animal carcasses.
What are the main threats to albatrosses?
The albatross family, like many other seabird groups, are becoming increasingly threatened. In fact, they are the most threatened group of birds globally! According to the International Union for the Conservation of Nature (IUCN) Red List, 15 out of the 22 albatross species are considered at risk of extinction.
Their decline is closely linked to commercial longline and trawl fisheries operating in seabird feeding areas, combined with the impacts of invasive alien species and climate change.
Albatrosses are attracted close to fishing vessels by the smell of bait and discarded fish. This often results in them being accidentally captured on baited hooks and drowning or being fatally struck by trawl cables towing nets through the water. This is known as bycatch and is the biggest threat albatrosses face globally. It is estimated that 100,000 albatrosses are killed this way each year.
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Predation by invasive alien species at breeding sites affects over 60% of albatross species. On Gough Island – a remote, uninhabited island in the Tristan da Cunha archipelago in the South Atlantic Ocean – more than 2 million seabird chicks, including those of the endemic Tristan albatross, die each year from wounds inflicted by introduced mice. The RSPB is working towards removing these impacts on Gough Island through a large and ambitious island restoration project.
How are the threats being addressed?
Since many albatross species have such vast ranges and encounter threats both at sea and ashore, their threats need to be addressed at multiple scales. The BirdLife International Marine Programme, an international conservation programme hosted by the RSPB, is dedicated to addressing global seabird declines using a combination of top-down and bottom-up approaches: influencing international policy is vital for securing conservation management for far-ranging seabirds – but equally important is working on practical solutions with fishers and others to find and implement the right management measures.
Simple and inexpensive activities, known as bycatch “mitigation measures” are highly effective in preventing these unintentional albatross deaths in trawl and longline fisheries. These include using bird-scaring lines to deter birds away from baited hooks and net cables, adding weights to branch lines, setting gear at night, and other innovative technologies.
BirdLife has secured commitments from the intergovernmental organisations which manage tuna stocks on the High Seas, called Regional Fisheries Management Organisations, or RFMOs, to require the fleets they manage to use bycatch mitigation measures when vessels are in areas which overlap with albatross.
What is the long-term outlook for albatrosses?
The outlook for endangered albatross species has improved, thanks to the success of conservation efforts. Through the work done by the ATF, the BirdLife International Marine Programme, and other partners, the tide is starting to turn for these remarkable birds. However, there is still much work to be done. Many fisheries fleets still don’t use seabird bycatch mitigation and mortality rates remain concerningly high. This is particularly the case in the High Seas where monitoring and compliance are difficult to implement. Remote Electronic Monitoring (REM) systems offer a potential solution, although the technology is not yet widely adopted.
For fisheries that already have already introduced regulations, the ATF is focussed on making sure they stick. This means training fisheries observers and inspectors to monitor compliance, refining the effectiveness of mitigation measures to suit the requirements of specific fleets, and ensuring seabird bycatch is as integral to fisheries management as keeping track of target fish stocks.
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