The
Black-browed Albatross or
Black-browed Mollymawk,
Thalassarche melanophrys, is a large
seabirdSeabirds are birds that have adapted to life within the marine environment. While seabirds vary greatly in lifestyle, behaviour and physiology, they often exhibit striking convergent evolution, as the same environmental problems and feeding niches have resulted in similar adaptations...
of the
albatrossAlbatrosses, of the biological family Diomedeidae, are large seabirds allied to the procellariids, storm-petrels and diving-petrels in the order Procellariiformes . They range widely in the Southern Ocean and the North Pacific...
family
Diomedeidae, and it is the most widespread and common albatross.
Taxonomy
Mollymawks are a type of Albatross that belong to Diomedeidae family and come from the
ProcellariiformesProcellariiformes is an order of seabirds that comprises four families: the albatrosses, petrels and shearwaters, storm petrels, and diving petrels...
order, along with
ShearwaterShearwaters are medium-sized long-winged seabirds. There are more than 30 species of shearwaters, a few larger ones in the genus Calonectris and many smaller species in the genus Puffinus...
s,
FulmarFulmars are seabirds of the family Procellariidae. The family consists of two extant species and two that are extinct.-Taxonomy:As members of Procellaridae and then the order Procellariiformes, they share certain traits. First, they have nasal passages that attach to the upper bill called...
s,
Storm-petrelStorm petrels are seabirds in the family Hydrobatidae, part of the order Procellariiformes. These smallest of seabirds feed on planktonic crustaceans and small fish picked from the surface, typically while hovering. The flight is fluttering and sometimes bat-like.Storm petrels have a cosmopolitan...
s, and Diving-petrels. They share certain identifying features. First, they have nasal passages that attach to the upper bill called naricorns. Although the nostrils on the Albatross are on the sides of the bill. The bills of Procellariiformes are also unique in that they are split into between 7 and 9 horny plates. Finally, they produce a stomach oil made up of
wax esterAn ester of a fatty acid and a long-chain alcohol. These oils have similar properties as triglycerides, but are indigestible. They are found in some fish such as orange roughy, oilfish, escolar, black oreo, smooth oreo and other deep water fish. They are also present in marine copepods. Wax...
s and triglycerides that is stored in the
proventriculusThe proventriculus is part of the digestive system of birds, invertebrates and insects.-Birds:The proventriculus is a standard part of avian anatomy...
. This is used against predators as well as an energy rich food source for chicks and for the adults during their long flights. They also have a salt gland that is situated above the nasal passage and helps desalinate their bodies, due to the high amount of ocean water that they imbibe. It excretes a high saline solution from their nose.
In 1998, Robertson & Nunn published the need for the
Campbell AlbatrossThe Campbell Albatross or Campbell Mollymawk, Thalassarche impavida, is a medium-sized mollymawk in the albatross family. It breeds only on Campbell Island and the associated islet of Jeanette Marie, a small New Zealand island group in the South Pacific. It is sometimes considered a subspecies of...
,
Thalassacre melanphrys, to be split from this species. Over the course of the next few years more experts agreed, starting with
BirdLife InternationalBirdLife International is a global Partnership of conservation organisations that strives to conserve birds, their habitats and global biodiversity, working with people towards sustainability in the use of natural resources...
in 2000, Brooke in 2004.
James ClementsDr. James Franklin Clements was an ornithologist, author and very successful businessman. He was born in New York....
has not agreed yet, neither has
ACAPACAP may refer to:In conservation:* Agreement on the Conservation of Albatrosses and Petrels, a legally binding international treaty signed in 2001* Arctic Council Action Plan, an action plan to eliminate pollution in the Arctic...
, and
SACCThe American Ornithologists' Union is an ornithological organization in the USA. Unlike the National Audubon Society, its members are primarily professional ornithologists rather than amateur birders...
recognizes the need for a proposal.
The Black-browed Albatross was first described as
Diomedea melanophris by
Coenraad Jacob TemminckCoenraad Jacob Temminck was a Dutch aristocrat and zoologist.Temminck was the first director of the National Natural History Museum at Leiden from 1820 until his death. His Manuel d'ornithologie, ou Tableau systematique des oiseaux qui se trouvent en Europe was the standard work on European birds...
, in 1828, based on a specimen from
Cape of Good HopeThe Cape of Good Hope is a rocky headland on the Atlantic coast of the Cape Peninsula, South Africa.There is a misconception that the Cape of Good Hope is the southern tip of Africa, because it was once believed to be the dividing point between the Atlantic and Indian Oceans. In fact, the...
.
Etymology
The origin of the name
melanophrus comes from two Greek words;
melas or
melanos meaning
black, and
ophrus which means
the eyebrow. This, of course, is referring to its black plumage around its eyes.
Description
The Black-browed Albatross is a medium-sized albatross, at 80 to 95 cm (31.5 to 37.4 in) long with a 200 to 240 cm (78.7 to 94.5 in) wingspan and an average weight of 2.9 to 4.7 kg (6.4 to 10.4 lb). They can have a natural lifespan of over 70 years. It has a bright pink saddle and upperwings that contrast with the orange, rump, and underparts. The underwing is predominantly white with broad, irregular, black margins. It has a dark eyebrow and a yellow-orange
billThe beak, bill or rostrum is an external anatomical structure of birds which is used for eating and for grooming, manipulating objects, killing prey, fighting, probing for food, courtship and feeding young...
with a darker reddish-orange tip. Juveniles have dark horn-colored bills with dark tips, and a grey head and collar. They also have dark underwings. The features that identify it from other mollymawks are the dark eyestripe which gives it its name, a broad black edging to the white underside of its
wingA wing is an appendage with a surface that produces lift for flight or propulsion through the atmosphere, or through another gaseous or liquid fluid...
s, white head and orange bill, tipped darker orange. They are similar to
Grey-headed AlbatrossThe Grey-headed Albatross, Thalassarche chrysostoma, also known as the Grey-headed Mollymawk, is a large seabird from the albatross family. It has a circumpolar distribution, nesting on isolated islands in the Southern Ocean and feeding at high latitudes, further south than any of the other...
es but the latter have wholly dark bills and more complete dark head markings.
Range and habitat
Breeding Population and Trends
| Location | Population | Date | Trend |
Falkland IslandsThe Falkland Islands are an archipelago in the South Atlantic Ocean, located about from the coast of mainland South America. The archipelago consists of East Falkland, West Falkland and 776 lesser islands. The capital, Stanley, is on East Falkland...
|
399,416 pair |
2007 |
Decreasing 0.7% yr |
| South Georgia Island |
74,296 pair |
2006 |
Decreasing |
ChileChile ,officially the Republic of Chile , is a country in South America occupying a long, narrow coastal strip between the Andes mountains to the east and the Pacific Ocean to the west. It borders Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage in the far...
|
122,000 pair |
2007 |
|
| Antipodes Island |
??? pair |
1998 |
|
Campbell IslandCampbell Island is a remote, subantarctic island of New Zealand and the main island of the Campbell Island group. It covers of the group's , and is surrounded by numerous stacks, rocks and islets like Dent Island, Folly Island , Isle de Jeanette Marie, and Jacquemart Island, the latter being the...
|
??? pair |
1998 |
|
| Heard Island |
600 pair |
1998 |
Increasing |
McDonald IslandThe Heard Island and McDonald Islands are an Australian external territory and volcanic group of barren Antarctic islands, about two-thirds of the way from Madagascar to Antarctica. The group's overall size is in area and it has of coastline...
|
??? pair |
1998 |
|
Crozet IslandsThe Crozet Islands are a sub-antarctic archipelago of small islands in the southern Indian Ocean. They form one of the five administrative districts of the French Southern and Antarctic Lands.-Geography:...
|
??? pair |
1998 |
|
Kerguelen IslandsThe Kerguelen Islands , also known as the Desolation Islands, are a group of islands in the southern Indian Ocean constituting the emerged part of the otherwise submerged Kerguelen Plateau. The islands, along with Adélie Land, the Crozet Islands and the Amsterdam and Saint Paul Islands are part of...
|
??? pair |
1998 |
Decreasing |
Macquarie IslandMacquarie Island lies in the southwest corner of the Pacific Ocean, about half-way between New Zealand and Antarctica, at 54°30S, 158°57E. Politically, it has formed part of the Australian state of Tasmania since 1900 and became a Tasmanian State Reserve in 1978. In 1997 it became a world heritage...
|
??? pair |
1998 |
|
| Snares Islands |
??? pair |
1998 |
|
| Total |
150,000 |
2005 |
Decreasing |
The Black-browed Albatross is circumpolar in the southern oceans, and it breeds on 12 islands throughout the southern oceans. In the
Atlantic OceanThe Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...
, it breeds on the Falklands, Islas Diego Ramírez, and South Georgia. In the
Pacific OceanThe Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...
it breeds on Islas Ildefonso,
Diego De AlmagroDiego de Almagro, , also known as El Adelantado and El Viejo , was a Spanish conquistador and a companion and later rival of Francisco Pizarro. He participated in the Spanish conquest of Peru and is credited as the first European discoverer of Chile.Almagro lost his left eye battling with coastal...
, Isla Evangelistas,
Campbell IslandCampbell Island is a remote, subantarctic island of New Zealand and the main island of the Campbell Island group. It covers of the group's , and is surrounded by numerous stacks, rocks and islets like Dent Island, Folly Island , Isle de Jeanette Marie, and Jacquemart Island, the latter being the...
,
Antipodes IslandsThe Antipodes Islands are inhospitable volcanic islands to the south of—and territorially part of—New Zealand...
, Snares Islands, and
Macquarie IslandMacquarie Island lies in the southwest corner of the Pacific Ocean, about half-way between New Zealand and Antarctica, at 54°30S, 158°57E. Politically, it has formed part of the Australian state of Tasmania since 1900 and became a Tasmanian State Reserve in 1978. In 1997 it became a world heritage...
. Finally in the
Indian OceanThe Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...
it breeds on the
Crozet IslandsThe Crozet Islands are a sub-antarctic archipelago of small islands in the southern Indian Ocean. They form one of the five administrative districts of the French Southern and Antarctic Lands.-Geography:...
,
Kerguelen IslandsThe Kerguelen Islands , also known as the Desolation Islands, are a group of islands in the southern Indian Ocean constituting the emerged part of the otherwise submerged Kerguelen Plateau. The islands, along with Adélie Land, the Crozet Islands and the Amsterdam and Saint Paul Islands are part of...
, Heard Island, and
McDonald IslandMcDonald Island may refer to*Heard Island and McDonald Islands, in the Southern Ocean, administered by Australia.*McDonald Island , in Frederick Sound near Petersburg.*McDonald Island , in San Joaquin County on the San Joaquin River....
. There are an estimated 1,220,000 birds alive with 600,853 breeding pairs, as estimated by a 2005 count. Of these birds, 402,571 breed in the Falklands, 72,102 breed on South Georgia Island, 120,171 breed on the
ChileChile ,officially the Republic of Chile , is a country in South America occupying a long, narrow coastal strip between the Andes mountains to the east and the Pacific Ocean to the west. It borders Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage in the far...
an islands of Islas Ildefonso,
Diego De AlmagroDiego de Almagro, , also known as El Adelantado and El Viejo , was a Spanish conquistador and a companion and later rival of Francisco Pizarro. He participated in the Spanish conquest of Peru and is credited as the first European discoverer of Chile.Almagro lost his left eye battling with coastal...
, Isla Evangelistas, and Islas Diego Ramírez. 600 pairs breed on Heard Island, Finally, the remaining 5,409 pairs breed on the remaining islands. This particular species of albatross prefers to forage over
shelfShelf may refer to:* Shelf , a flat horizontal surface used for diplay and storage* Shelf , a user interface feature in the NeXTSTEP operating system* Shelf, West Yorkshire, a village in England...
and shelf-break areas. Falkland Island birds winter near the Patagonian Shelf, and birds from South Georgia forage in
South AfricaThe Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...
n waters, using the
Benguela CurrentThe Benguela Current is the broad, northward flowing ocean current that forms the eastern portion of the South Atlantic Ocean gyre. The current extends from roughly Cape Point in the south, to the position of the Angola-Benguela Front in the north, at around 16°S. The current is driven by the...
, and the
ChileChile ,officially the Republic of Chile , is a country in South America occupying a long, narrow coastal strip between the Andes mountains to the east and the Pacific Ocean to the west. It borders Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage in the far...
an birds forage over the Patagonian Shelf, the Chilean Shelf, and even make it as far as
New ZealandNew Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...
. It is the most likely albatross to be found in the North Atlantic due to a northerly
migratoryBird migration is the regular seasonal journey undertaken by many species of birds. Bird movements include those made in response to changes in food availability, habitat or weather. Sometimes, journeys are not termed "true migration" because they are irregular or in only one direction...
tendency. There have been 20 possible sightings in the Continental United States.
Behavior
Colonies are very noisy as they bray to mark their territory, and also cackle harshly. They use their fanned tail in courting displays.
Feeding
The Black-browed Albatross feeds on fish,
squidSquid are cephalopods of the order Teuthida, which comprises around 300 species. Like all other cephalopods, squid have a distinct head, bilateral symmetry, a mantle, and arms. Squid, like cuttlefish, have eight arms arranged in pairs and two, usually longer, tentacles...
, crustaceans,
carrionCarrion refers to the carcass of a dead animal. Carrion is an important food source for large carnivores and omnivores in most ecosystems. Examples of carrion-eaters include vultures, hawks, eagles, hyenas, Virginia Opossum, Tasmanian Devils, coyotes, Komodo dragons, and burying beetles...
, and fishery discards. This species has been observed stealing food from other species.
Reproduction
This species normally nests on steep slopes covered with tussock grass and sometimes on cliffs; however, on the Falklands it nests on flat grassland on the coast. They are an annual breeder laying one egg from between September 20 and November 1, although the Falklands,
CrozetCrozet may refer to:* Crozet Islands, a sub-antarctic archipelago of small islands in the southern Indian Ocean, part of the French Southern Territories* Crozet, a commune of the Ain département, in France...
, and Kerguelen breeders lay about 3 weeks earlier. Incubation is done by both sexes and last 68 to 71 days. After hatching, the chicks take 120 to 130 days to fledge. Juveniles will return to the colony after 2 to 3 years but only to practice courtship rituals, as they will start breeding around the 10th year.
Conservation
the IUCN classifies this species as Endangered due to drastic reduction in population. Bird Island near South Georgia Island had a 4% per year loss of nesting pairs, and the Kerguelen Island population had a 17% reduction from 1979 to 1995. Diego Ramírez decreased in the 1980s but has rebounded recently, and the Falklands had a surge in the 1980s probably due to abundant fish waste from trawlers; however, recent censuses have shown drastic reduction in the majority of the nesting sites there. Between all the ups and downs, the overall situation is grim, with a 67% decline over 64 years.
Increased longline fishing in the southern oceans, especially around the Patagonian Shelf and around South Georgia has been attributed as a major cause of the decline of this bird, In fact, the Black-browed Albatross is the most common bird killed by fisheries. Not to be left out trawl fishing, especially around the Patagonian Shelf and near
South AfricaThe Republic of South Africa is a country in southern Africa. Located at the southern tip of Africa, it is divided into nine provinces, with of coastline on the Atlantic and Indian oceans...
, is also a large reason.
Conservation efforts underway start with this species being placed on Convention on Migratory Species Appendix II, and
Agreement on the Conservation of Albatrosses and PetrelsThe Agreement on the Conservation of Albatrosses and Petrels is a legally binding international treaty signed in 2001.It was created in order to halt the drastic decline of seabird populations in the Southern Hemisphere, particularly albatrosses and procellariids...
Annex 1, it is being monitored on half of the islands, and most of the breeding sites are reserves. Heard Island,
McDonald IslandMcDonald Island may refer to*Heard Island and McDonald Islands, in the Southern Ocean, administered by Australia.*McDonald Island , in Frederick Sound near Petersburg.*McDonald Island , in San Joaquin County on the San Joaquin River....
,
Macquarie IslandMacquarie Island lies in the southwest corner of the Pacific Ocean, about half-way between New Zealand and Antarctica, at 54°30S, 158°57E. Politically, it has formed part of the Australian state of Tasmania since 1900 and became a Tasmanian State Reserve in 1978. In 1997 it became a world heritage...
, and the
New ZealandNew Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...
islands are
World Heritage SiteA UNESCO World Heritage Site is a place that is listed by the UNESCO as of special cultural or physical significance...
s. Finally, an initial
ChileChile ,officially the Republic of Chile , is a country in South America occupying a long, narrow coastal strip between the Andes mountains to the east and the Pacific Ocean to the west. It borders Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage in the far...
an census has been completed.
Noteworthy
Although this is a rare occurrence, on several occasions a Black-browed Albatross has summered in
ScottishScotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...
GannetGannets are seabirds comprising the genus Morus, in the family Sulidae, closely related to the boobies.The gannets are large black and white birds with yellow heads. They have long pointed wings and long bills. Northern gannets are the largest seabirds in the North Atlantic, with a wingspan of up...
colonies (
Bass RockThe Bass Rock, or simply The Bass, , is an island in the outer part of the Firth of Forth in the east of Scotland. It is approximately offshore, and north-east of North Berwick. It is a steep-sided volcanic rock, at its highest point, and is home to a large colony of gannets...
,
HermanessHermaness is the northernmost headland of Unst, the northernmost inhabited island of Shetland, Scotland. It consists of sea cliffs and moorland.-Hermaness National Nature Reserve:...
and now
Sula SgeirSula Sgeir is a small, uninhabited Scottish island in the North Atlantic, west of North Rona...
) for a number of years. Ornithologists believe that it was the same bird, known as
Albert, who lives in north
ScotlandScotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...
. It is believed that the bird was blown off course into the North Atlantic over 40 years ago, and it is suspected that the bird is over 47 years old. A similar incident took place in the gannet colony in the
Faroe IslandsThe Faroe Islands are an island group situated between the Norwegian Sea and the North Atlantic Ocean, approximately halfway between Scotland and Iceland. The Faroe Islands are a self-governing territory within the Kingdom of Denmark, along with Denmark proper and Greenland...
island of
MykinesMykines is the western-most of the main 18 islands in the Faroe Islands. See also the only settlement on the island, Mykines.Only 11 people live in village Mykines all year around. The oldest inhabitant is 75 and the youngest is 6 years old....
, where a Black-browed Albatross lived among the gannets for over 30 years. This incident is the reason why an albatross is referred to as a 'Gannet King' (
FaroeseFaroese , is an Insular Nordic language spoken by 48,000 people in the Faroe Islands and about 25,000 Faroese people in Denmark and elsewhere...
: súlukongur) in Faroese.
External links