Wandering Albatross
A species of Great albatrosses Scientific name : Diomedea exulans Genus : Great albatrosses
Wandering Albatross, A species of Great albatrosses
Botanical name: Diomedea exulans
Genus: Great albatrosses
Content
Description General Info
Photo By Francesco Veronesi , used under CC-BY-SA-2.0 /Cropped and compressed from original
Description
The wandering albatross has the longest wingspan of any living bird, typically ranging from 2.51 to 3.5 m (8 ft 3 in to 11 ft 6 in), with a mean span of 3.1 m (10 ft 2 in) in the Bird Island, South Georgia colony and an average of exactly 3 m (9 ft 10 in) in 123 birds measured off the coast of Malabar, New South Wales. On the Crozet Islands, adults averaged 3.05 m (10 ft 0 in) in wingspan. The longest-winged examples verified have been about 3.7 m (12 ft 2 in). Even larger examples have been claimed, with two giants reportedly measuring 4.22 m (13 ft 10 in) and 5.3 m (17 ft 5 in) but these reports remain unverified. As a result of its wingspan, it is capable of remaining in the air without flapping its wings for several hours at a time (travelling 22 m for every metre of drop). The length of the body is about 107 to 135 cm (3 ft 6 in to 4 ft 5 in) with females being slightly smaller than males. Adults can weigh from 5.9 to 12.7 kg (13 to 28 lb), although most will weigh 6.35 to 11.91 kg (14.0 to 26.3 lb). On Macquarie Island, three males averaged 8.4 kg (19 lb) and three females averaged 6.2 kg (14 lb). In the Crozet Islands, males averaged 9.44 kg (20.8 lb) while females averaged 7.84 kg (17.3 lb). However, 10 unsexed adults from the Crozets averaged 9.6 kg (21 lb). On South Georgia, 52 males were found to average 9.11 kg (20.1 lb) while 53 females were found to average 7.27 kg (16.0 lb). Immature birds have been recorded weighing as much as 16.1 kg (35 lb) during their first flights (at which time they may still have fat reserves that will be shed as they continue to fly). On South Georgia, fledglings were found to average 10.9 kg (24 lb). Albatrosses from outside the "snowy" wandering albatross group (D. exulans) are smaller but are now generally deemed to belong to different species. The plumage varies with age, with the juveniles starting chocolate brown. As they age they become whiter. The adults have white bodies with black and white wings. Males have whiter wings than females with just the tips and trailing edges of the wings black. The wandering albatross is the whitest of the wandering albatross species complex, the other species having a great deal more brown and black on the wings and body as breeding adults, very closely resembling immature wandering albatrosses. The large bill is pink, as are the feet. 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. They excrete a high saline solution from their nose, which is a probable cause for the pink-yellow stain seen on some animal's necks.
Size
1.4 m
Colors
Brown
Black
Gray
White
Life Expectancy
80 years
Nest Placement
Ground
Feeding Habits
Wandering Albatross feed on cephalopods, fish, crustaceans, and sea-borne refuse. Known for voracious feeding, sometimes to immobility, they often trail ships for scraps and perform shallow dives.
Habitat
The wandering Albatross occupies open oceanic expanses of the southern oceans, from subtropical waters to the Antarctic periphery. Its habitat is characterized by vast flight ranges over the sea. For breeding, wandering Albatross selects remote sub-Antarctic islands with sparse vegetation on gentle slopes, allowing crucial takeoff space. Habitats are avoided if they have dense foliage or are overly exposed.
Dite type
Piscivorous
General Info
Feeding Habits
Bird food type
Behavior
Wanderers have a large range of displays from screams and whistles to grunts and bill clapping. When courting they will spread their wings, wave their heads, and rap their bills together, while braying. They can live for over 50 years.
Distribution Area
The wandering albatross breeds on South Georgia Island, Crozet Islands, Kerguelen Islands, Prince Edward Islands, and Macquarie Island, is seen feeding year round off the Kaikoura Peninsula on the east coast of the south island of New Zealand and it ranges in all the southern oceans from 28° to 60°. Wandering albatrosses spend most of their life in flight, landing only to breed and feed. Distances travelled each year are hard to measure, but one banded bird was recorded travelling 6000 km in twelve days.
Species Status
The IUCN lists the wandering albatross as vulnerable status. Adult mortality is 5% to 7.8% per year. It has an occurrence range of 64,700,000 km (25,000,000 sq mi), although its breeding range is only 1,900 km (730 sq mi). In 2007, there were an estimated 25,500 adult birds, broken down to 1,553 pairs on South Georgia Island, 1,850 pairs on Prince Edward Island, 1,600 on Marion Island, 2,000 on Crozet Islands, 1,100 on the Kerguelen Islands, and 12 on Macquarie Island for a total of 8,114 breeding pairs. The South Georgia population is shrinking at 1.8% per year. The levels of birds at Prince Edward and the Crozet Islands seem to be stabilising although most recently there may be some shrinking of the population. The biggest threat to their survival is longline fishing; however, pollution, mainly plastics and fishing hooks, are also taking a toll. The CCAMLR has introduced measures to reduce bycatch of albatrosses around South Georgia by 99%, and other regional fishing commissions are taking similar measures to reduce fatalities. The Prince Edward Islands are a nature preserve, and the Macquarie Islands are a World Heritage site. Finally, large parts of the Crozet Islands and the Kerguelen Islands are a nature reserve.
Photo By Francesco Veronesi , used under CC-BY-SA-2.0 /Cropped and compressed from original
Scientific Classification
Phylum
Chordates Class
Birds Order
Albatrosses and Petrels Family
Albatrosses Genus
Great albatrosses Species
Wandering Albatross