Albatross
| Albatross | ||||||||||
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Diomedea Thallasarche Phoebastria Phoebetria | ||||||||||
The albatrosses (from Portuguese Alcatraz, a pelican) are seabirds in the family Diomedeidae, which is closely allied to the petrels. All 21 albatross species are endangered species (or more threatened than that) according to the IUCN Red List.
This is a group of large to very large birds with very long narrow wings, which are aerodynamically highly efficient. The beak is large, strong and sharp-edged, the upper mandible terminating in a large hook. The feet have no hind toe, and the three anterior toes are completely webbed.
Albatrosses travel huge distances using a technique used by many long-winged seabirds called dynamic soaring. This enables them to minimise the effort needed by gliding across wave fronts gaining energy from the vertical wind gradient.
Their principal food is cephalopods.
Current thinking divides the albatrosses into four genera:
- North Pacific albatrosses (Phoebastria)
- Laysan Albatross P. immutabilis
- Black-footed Albatross P. nigripes
- Galapagos Albatross P. irrorata
- Short-tailed Albatross P. albatrus
- Great albatrosses (Diomedea)
- Royal Albatross D. epomophora
- Wandering Albatross D. exulans
- Amsterdam Albatross D. amsterdamensis
- Mollymawks (Thalassarche)
- Yellow-nosed Albatross T. chlororhynchos
- Buller's Albatross T. bulleri
- Shy Albatross T. cauta
- Grey-headed Albatross T. chrysostoma
- Black-browed Albatross T. melanophris
- Sooty albatrosses (Phoebetria)
- Dark-mantled Sooty Albatross P. fusca
- Light-mantled Sooty Albatross P. palpebrata.
Black-browed Albatross
The taxonomy of the albatross group is very fluid at the present time. The American Ornithological Union places seabirds, birds of prey and many others in a greatly enlarged order Ciconiiformes, whereas in Europe, South Africa, Australia and New Zealand, the more traditional Procellariiformes is retained.
Both the British Ornithologists' Union and the South African authorities split the albatrosses into four genera as indicated in the table. (Ibis (2002) 144 p707-710.)
The name Diomedea, assigned to the albatrosses by Linnaeus references the mythical metamorphosis of the companions of the Greek warrior Diomedes into birds.
The world's only mainland royal albatross colony is within the city limits of Dunedin, New Zealand.
Black-browed Albatross
Albatross is also a Golf term, meaning three strokes under par.
References