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Overview
Brief Summary
Biology
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Description
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Distribution
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UNESCO-IOC Register of Marine Organisms
http://www.marinespecies.org/aphia.php?p=sourcedetails&id=1318
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Gordon, D. (Ed.) (2009). New Zealand Inventory of Biodiversity. Volume One: Kingdom Animalia. 584 pp
http://www.marinespecies.org/porifera/porifera.php?p=sourcedetails&id=145244
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Range Description
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Geographic Range
The range of Diomedea epomophora extends throughout the oceans of the Southern Hemisphere. Two subspecies of D. epomophora are recognized today. Northern royal albatrosses (D. e. sanfordi) commonly nest on Campbell Island and the Auckland Islands. Southern royal albatrosses (D.e. epomophora) nest almost exclusively on the Chatham Islands, located hundreds of miles east of New Zealand. After breeding, the species may circumnavigate the Southern Ocean, though it is most commonly sighted in New Zealand and South American waters. It has never been recorded north of the Equator.
Biogeographic Regions: neotropical (Native ); australian (Native ); pacific ocean (Native )
- del Hoyo, J., A. Elliott, J. Sargatal. 1992. Handbook of the Birds of the World. Barcelona: Lynx Edicions.
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Range
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Physical Description
Morphology
Physical Description
Considered the largest seabird and amongst the largest of all birds capable of flight, D. epomophora is most recognizable by its remarkably long, slender, knife-like wings. It can have a wingspan of over ten feet. It weighs 9000 g on average and is 107 to 122 cm long. There are two subspecies of D. epomophora, however, differences in appearance are minimal. Both are predominantly white, with faint pinkish bills. Northern royal albatross (D. e. sanfordi) are considerably smaller and have entirely black upper wings. Southern royal albatross (D. e. epomophora) have predominantly white wings with black markings near the wing tips. There is little sexual dimorphism within the species, and males tend to be only slightly larger than females.
Average mass: 9000 g.
Range length: 107 to 122 cm.
Range wingspan: 305 to 351 cm.
Average wingspan: 325 cm.
Sexual Dimorphism: male larger
- Hoffman, E. 2002. A Royal Air Force: With Beauty and Grace, the World's Largest Seabird Takes Command of the Sky. Animals, 135 (1): 16-18, 26.
- Australian Stamp & Coin Coy Pty. Ltd. 2003. "The Royal Albatross" (On-line). Accessed April 16, 2004 at http://www.australianstamp.com/Coin-web/feature/nature/royalalb.htm.
- Grunewald, S. 2004. "Royal Albatross" (On-line). 70 South. Accessed April 16, 2004 at http://www.70south.com/resources/animals/birds/royalalbatross.
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Ecology
Habitat
Habitat and Ecology
Systems
- Terrestrial
- Marine
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Nearly 80 percent of a royal albatross' life is spent directly exposed to the cold, treacherous, open oceans of the Southern Hemisphere. Remote tropical islands are sought out for nesting. They typically nest on slopes with tussock grass providing some shelter, though exposed sites are also common as they ease the often difficult tasks of take-off and landing.
Habitat Regions: temperate ; tropical ; terrestrial ; saltwater or marine
Aquatic Biomes: pelagic ; coastal
- BirdLife International. 2000. "Species Factsheet" (On-line ). Accessed 03/13/03 at http://www.birdlife.org.uk/species/threatened_species.cfm?SpcRecID=3954.
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Water temperature and chemistry ranges based on 50 samples.
Environmental ranges
Depth range (m): 0 - 0
Temperature range (°C): -0.767 - 7.284
Nitrate (umol/L): 13.851 - 28.640
Salinity (PPS): 33.654 - 34.115
Oxygen (ml/l): 6.773 - 8.188
Phosphate (umol/l): 1.240 - 1.909
Silicate (umol/l): 5.034 - 75.155
Graphical representation
Temperature range (°C): -0.767 - 7.284
Nitrate (umol/L): 13.851 - 28.640
Salinity (PPS): 33.654 - 34.115
Oxygen (ml/l): 6.773 - 8.188
Phosphate (umol/l): 1.240 - 1.909
Silicate (umol/l): 5.034 - 75.155
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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Trophic Strategy
Food Habits
Royal albatross are carnivorous. They eat mainly cephalopods (Moroteuthis ingens, Kondakovia longimana, Hisioteuthis atlantica), fish (Macruronus novaezelandiae), and some crustaceans. Due to their lack of maneuverability, an albatross rarely picks up prey in flight. Instead, they sit on the water and use a method known as surface-seizing. Occasionally, they make shallow plunges. Most of their hunting, particularly for squid, is done at night.
Animal Foods: fish; mollusks; aquatic crustaceans
Primary Diet: carnivore (Piscivore , Molluscivore )
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Associations
Ecosystem Roles
Because of their generally solitary lifestyle and the wide expanse of territory they cover, royal albatross have little impact on their surroundings. Royal albatross are predators located at the top of the food chain. Due to the small population size of royal albatross, populations of their prey are left relatively unaffected.
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Predation
Due in part to their large size and solitary lifestyle, both in the air and on secluded islands, royal albatross have no known predators. Humans have been a threat in the past, but recent, stricter penalties for killing royal albatross have helped populations remain stable.
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Known prey organisms
Actinopterygii
Mollusca
Crustacea
This list may not be complete but is based on published studies.
- Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 16, 2011 at http://animaldiversity.org. http://www.animaldiversity.org
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Life History and Behavior
Behavior
Communication and Perception
Elaborate displays are done by males and females to form pair-bonds. Actions like 'Bill-circling', 'Sky-pointing', 'Flank-touching' with the bill and the spreading of the wings are involved in courtship. These displays are typically accompanied by a variety of calls. This form of communal dancing usually takes place on land but on occasion it can occur at sea. Royal albatross are usually silent at sea but can become rather vocal when competing for food, especially around fish boats. Croaking, shrieking, and gargling sounds are the most common sounds made during competition for food. As a threat to intruders, a highly characteristic rattling sound can be produced by clappering the bill quickly and repeatedly.
Communication Channels: visual ; tactile ; acoustic
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Life Expectancy
Lifespan/Longevity
Royal albatross are remarkably long-lived when considering that the vast majority of their lives are spent over the perilous southern oceans. The adult mortality rate is 3 percent per year. In the wild, a royal albatross was known to have lived to over 58 years. It is possible that some birds may reach an age of 80 years.
Range lifespan
Status: wild: 58 (high) years.
Average lifespan
Status: wild: 58.0 years.
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Lifespan, longevity, and ageing
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Reproduction
Royal albatross pair for life. 'Divorce' is rare and typically only occurs after several failed breeding attempts, under normal conditions only death can split a pair. Royal albatross have extensive and varied courtship displays that include actions like 'Bill-circling', 'Sky-pointing', 'Flank-touching' with the bill, and full spreading of the wings. In many cases, these rituals are done and a pair is formed in the season prior to breeding. An elaborate courtship is unnecessary for birds that have bred together in the previous year. Previously mated pairs usually use the same nest-site as the year before. Typically, the male arrives a few days before the female. A few greeting ceremonies are performed upon the arrival of the female, and shortly thereafter, they breed. Breeding is biennial (occurs every two years), due in part to the long incubation period. As a result, there is no replacement egg laying, forcing a pair to wait until the following season to re-nest if their egg is lost.
Mating System: monogamous
Royal albatross reproduce once biennially, breeding starts in October. Without fail, only one egg is laid. Eggs weigh between 205 to 487 g, about 5 to 11 percent of the body weight of the mother. Incubation lasts 79 days. Chicks have white down and their coloration is similar to that of adults. Chicks fledge after about 240 days, at this point, the chick simply flies off on its own. Sexual maturity is reached in 9 to 11 years.
Breeding interval: Biennial
Breeding season: Breeding begins in October
Average eggs per season: 1.
Average time to hatching: 79 days.
Average fledging age: 240 days.
Range age at sexual or reproductive maturity (female): 9 to 11 years.
Range age at sexual or reproductive maturity (male): 9 to 11 years.
Key Reproductive Features: seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); fertilization
Having arrived to the nest-site first, the male defends the territory against other males and rebuilds or starts building a new nest while he waits for his partner. When the female arrives a few days later, the birds briefly display then copulate. Immediately afterwards, both return to sea where they feed and begin to build up a reserve of food. Both birds return to the nest shortly before the egg is laid. The female lays the egg then immediately retreats to the sea. The male is left to incubate the egg until the female returns, sometimes leaving the male without food or water for 2 to 3 weeks. When the female returns to the nest, the male leaves to find food and regain his strength. This pattern continues until the egg hatches and the chick no longer needs to be brooded, this usually takes six weeks. At this point, both parents leave to find food but return daily to feed their chick a meal of partly digested fish, squid, and stomach oil that adults produce during the ordinary digestion of their food. The oil is rich in fats and helps provide the nutrients necessary for the chick to grow despite long spans without food. The growing chick wanders around the nest-site between visits, but must return to the nest to be fed. After a few brief failures, the chick simply flies away to start life on its own.
Parental Investment: no parental involvement; altricial ; pre-hatching/birth (Protecting: Male, Female); pre-weaning/fledging (Provisioning: Male, Female, Protecting: Male, Female)
- del Hoyo, J., A. Elliott, J. Sargatal. 1992. Handbook of the Birds of the World. Barcelona: Lynx Edicions.
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Molecular Biology and Genetics
Molecular Biology
Statistics of barcoding coverage: Diomedea epomophora
Public Records: 0
Specimens with Barcodes: 17
Species With Barcodes: 1
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Conservation
Conservation Status
IUCN Red List Assessment
Red List Category
Red List Criteria
Version
Year Assessed
Assessor/s
Reviewer/s
Contributor/s
Justification
History
- 2008Vulnerable
- 2007Vulnerable
- 2005Vulnerable
- 2004Vulnerable
- 2003Vulnerable
- 2000Vulnerable
- 1994Not Recognized
- 1988Not Recognized
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Populations declined rapidly in the past due to less stringent requirements on fishing practices. Recent bans in New Zealand waters have required trawlers to replace outdated equipment and implement new, safer methods. Populations have stabilized as a result of these measures. Today, populations are estimated to be 10,000 to 20,000 pairs. Royal albatross are listed as 'Vulnerable' by the IUCN.
CITES: no special status
IUCN Red List of Threatened Species: vulnerable
- IUCN, 2003. "2003 IUCN Red List of Endangered Species" (On-line). Accessed April 19, 2004 at http://www.redlist.org/.
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Status
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Trends
Population
Population Trend
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Threats
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Management
Conservation Actions
CMS Appendix II and ACAP Annex 1. Cattle and sheep have been removed from Campbell, and cattle, rabbits and mice have been eradicated from Enderby. Rats were eradicated from Campbell in 2001, and an expedition in 1993 found no evidence of them persisting10. Almost 36,000 birds have been banded on Campbell since the 1940s, but since 2006 bands are being removed, except in two study colonies. Two study areas on Campbell were monitored annually in the 1990s10. All islands are nature reserves and, in 1998, were declared a World Heritage Site. Conservation Actions Proposed
Census the Campbell and Enderby colonies at 10-year intervals. Monitor vegetation change on Campbell and Enderby and assess its effect on habitat availability. Eradicate pigs and cats from Auckland Island6.
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Conservation
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Relevance to Humans and Ecosystems
Benefits
Economic Importance for Humans: Negative
Because of their inclination to prey on the bait used by trawlers and other fishing boats, many royal albatross were killed in fishing lines and nets. Today, new, more costly methods have been developed and implemented to prevent harm to the birds.
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Economic Importance for Humans: Positive
Their oceanic habits and isolated Southern Hemisphere range make royal albatross virtually inaccessible to humans. Because of their mastery of flight, royal albatross have gained worldwide admiration and respect and are sought out by birdwatchers. As a result, killing one for any reason is considered a serious offense.
Positive Impacts: ecotourism
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Wikipedia
Southern Royal Albatross
The Southern Royal Albatross (Diomedea epomophora) is a large seabird from the albatross family. At an average wingspan of around 3 m (9.8 ft), it is the second largest albatross, behind the Wandering Albatross.
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Taxonomy
Albatrosses belong to Diomedeidae family and come from the Procellariiformes order, along with shearwaters, fulmars, storm petrels, and diving petrels. They share certain identifying features. First, they have nasal passages that attach to the upper bill called naricorns; the nostrils of 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 esters and triglycerides that is stored in the proventriculus. This is used against predators as well as an energy rich food source for chicks and for the adults during their long flights.[3] It was once considered conspecific with the Northern Royal Albatross (Diomedea sanfordi) as the Royal Albatross and the split into two species is almost universally accepted. BirdLife International,[4] Brooke,[5] and Robertson & Nunn.[6] Clements still does not recognize the split,[7] and the SACC has recognized the need for a proposal.[8]
Etymology
Diomedea antipodensis breaks into Diomedea referring to Diomedes, whose companions turned to birds.[9]
Description
The Southern Royal Albatross has a length of 112–123 cm (44–48 in)[10] and a mean weight of 8.5 kg (19 lb). Males are about 2 to 3 kg (4.4 to 6.6 lb) heavier than females. Average wingspan has been reported from 2.9 to 3.28 m (9.5 to 10.8 ft), with an upper limit of about 3.51 m (11.5 ft). The Wandering albatross can exceed this species in maximum size and averages slightly larger, but the two species are close enough in dimensions that size cannot be used to distinguish between them.[11][12][13] The juvenile has a white head, neck, upper mantle, rump, and underparts. There are black speckles on the mantle, and they have dark brown or black wings with white flecks on coverts. Their tail is white except for the black tip as is the under-wing. Young birds soon lose the black on their tail and backs. White appears on the upperwing gradually, as speckles starting from the leading edge. All ages have a pink bill with black on the cutting edge on the upper mandible, and the legs are flesh. Young birds with all dark upperwings can be hard to differentiate from the Northern Royal Albatross. There are clear but subtle differences compared to the Wandering Albatross, with the Southern having a clean black and white appearance, lacking the peach neck spot often found on the Wandering Albatross. Most Wandering Albatross have dark feathers in the tail and crown and the white in this species expands from the middle of the wing, in larger blotches. The bill colour is also slightly paler, as well as the dark cutting edge along the middle. The average life span is 42.3 years.[10]
Range
| Location | Population | Date | Trend |
|---|---|---|---|
| Campbell Islands | 8,200-8,600 pair | 1997 | Stable |
| Enderby Island | 69 pair | 2001 | Stable |
| Auckland Island & Adams Island | 20 pair | 2001 | Stable |
| Total | 28,000-29,500 | 1997 | Stable |
The majority of the world's population of Southern Royal Albatrosses nest on the rat free Sub-antarctic Campbell Island, around 8,200 to 8,600 pairs. There are smaller colonies on Adams Island and Auckland Island in the Auckland Islands,20 pairs combined, and 69 pairs on Enderby Island and some sanfordi X epomophora hybrids at the Northern Royal Albatross colony on the Otago Peninsula in New Zealand. They range along the southern oceans concentrating on the west and east coast of southern South America, and also in the waters surrounding New Zealand.[10]
Behavior
Feeding
The Southern Royal Albatross eats squid and fish, with smaller amounts of carrion, crustaceans, and salps.[10]
Reproduction
They prefer to nest on tussock grassland, plateaus, or ridges, and will lay one egg biennially. Both parents will incubate the egg, and rear the young. When feeding the young they will range south to the Campbell Plateau and north to the Chatham Rise.[10]
Conservation
The IUCN classifies this bird as Vulnerable,[1] with an occurrence range of 63,400,000 km2 (24,500,000 sq mi), and a breeding range of 750 km2 (290 sq mi) with a total estimated population of between 28,000 and 29,500 (1997).
The population is recovering from its severe downward spiral in the late 19th century and the early 20th century. By the 1880s, this Albatross was extirpated from Auckland Island and Enderby Island. Pigs and cats are still a problem, as they take chicks and eggs, on Auckland Island. Longline fishing is a major problem and a possible emerging threat in Dracophyllum, a scrub that is taking away from their nesting range.[10]
Gallery
Southern Royal Albatross off Kaikoura, New Zealand
Footnotes
- ^ a b BirdLife International (2012). "Diomedea epomophora". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. http://www.iucnredlist.org/apps/redlist/details/106003954. Retrieved 16 July 2012.
- ^ Brands, S. (2008)
- ^ Double, M. C. (2003)
- ^ Lee, James (2008)
- ^ Brooke, R. (2004)
- ^ Robertson, C. J. R. & Nunn, G. B. (1998)
- ^ Clements, J. (2007)
- ^ Remsen Jr., C. J. (2008)
- ^ Gotch, A. F. (1995)
- ^ a b c d e f g BirdLife International (2008)(a)
- ^ Brooke, Michael, Albatrosses and Petrels across the World. Oxford University Press (2004), ISBN 978-0-19-850125-1
- ^ Wood, Gerald (1983). The Guinness Book of Animal Facts and Feats. ISBN 978-0-85112-235-9.
- ^ Harrison, Peter, Seabirds: An Identification Guide. Houghton Mifflin Harcourt (1991), ISBN 978-0-395-60291-1
References
- BirdLife International (2008(a)). "Bartlett's Tinamou - BirdLife Species Factsheet". Data Zone. http://www.birdlife.org/datazone/species/index.html?action=SpcHTMDetails.asp&sid=38&m=0. Retrieved 18 Feb 2009.
- Brands, Sheila (Aug 14 2008). "Systema Naturae 2000 / Classification - Diomedea (Diomedea) epomophora -". Project: The Taxonomicon. http://www.taxonomy.nl/Main/Classification/51479.htm. Retrieved 18 Feb 2009.
- Brooke, M. (2004) "Procellariidae" Albatrosses And Petrels Across The World Oxford, UK: Oxford University Press ISBN 0-19-850125-0
- Clements, James (2007). The Clements Checklist of the Birds of the World (6 ed.). Ithaca, NY: Cornell University Press. ISBN 978-0-8014-4501-9.
- Double, M. C. (2003). "Procellariiformes (Tubenosed Seabirds)". In Hutchins, Michael; Jackson, Jerome A.; Bock, Walter J. et al.. Grzimek's Animal Life Encyclopedia. 8 Birds I Tinamous and Ratites to Hoatzins. Joseph E. Trumpey, Chief Scientific Illustrator (2 ed.). Farmington Hills, MI: Gale Group. pp. 107–111. ISBN 0-7876-5784-0.
- Gotch, A. F. (1995) [1979]. "Albatrosses, Fulmars, Shearwaters, and Petrels". Latin Names Explained A Guide to the Scientific Classifications of Reptiles, Birds & Mammals. New York, NY: Facts on File. p. 190. ISBN 0-8160-3377-3.
- Lee, James (06 Oct 2008(b)). "Table 7: Species changing IUCN Red List Status" (PDF). IUCN RedList. BirdLife International. http://www.iucnredlist.org/documents/2008RL_stats_table_7_v1223294385.pdf. Retrieved 18 Feb 2009.[dead link]
- Remsen Jr., J. V.; et al. (07 Aug 2008). "A classification of the bird species of South America, South American Classification Committee, American Ornithologists' Union". South American Classification Committee. American Ornithologists' Union. http://www.museum.lsu.edu/~Remsen/SACCBaseline.html. Retrieved 18 Feb 2009.
- Robertson, C. J. R.; Nunn, G. B. (1998) "Towards a new taxonomy of albatrosses" Albatross Biology and Conservation Chipping Norton, Australia: Surrey Beatty & Sons Ltd. pp. 13–19
Unreviewed
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