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To be played whilst reading this particular blog ...http://www.youtube.com/watch?v=8scHKFwr0og
All Albatrosses have nasal passages that attach to the upper bill called 'naricorns', (though the nostrils of the Albatross are on the sides of the bill). The bills are also odd - split into between 7 and 9 horny plates. The other oddity is that the bird produces a stomach oil - made up of wax esters and triglycerides - that is stored in the proventriculus, (a standard bit of avian anatomy - a sort of glandular part of the stomach that may store and commence digestion of food before it progresses to the gizzard). This oil, so produced, 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.
I first saw an albatross whilst at sea with Margaret, just off the coast of Ulva Island - a tiny islet off Stewart Island, New Zealand. We spread some cut up dead fish as bait and the birds that arrived to feed were Black-Browed Albatrosses (Thalassarche melanophrysor), 'Mollymawks' in the local jargon. It is the Albatross most likely to be found in the Northern Hemisphere (but this is incredibly rare anyway - on several occasions a Black-browed Albatross has summered in Scottish Gannet colonies - Bass Rock, Hermaness and now Sula Sgeir - for a number of years. Bird experts think the sighting was of 'Albert' - the same bird each time).
It is one of 19 declining species of Albatross - from a total of 21 species in total. It's size is l .. a ... r ... g ...e - see the picture of one seeing off a seagull! The wing span could be nearly 2.25 metres! ... big birds! Their beaks looked like plastic ... and stuck on. Presumably efficient ... its food includes fish, squid, crustaceans, carrion, and fishery discards. It is the most vulnerable to long line fishing. It is also known to steal other sea bird's food!
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They breed primarily on Española (Hood) Isla in the Galápagos archipelago (the oldest and the southernmost). During
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Known to be endemic on the island, Española Isla is the waved albatross's only nesting place, so has the vast majority of the world's population of the bird too. Each April male Albatross return to Española, followed shortly thereafter by their mates. The courtship of the Waved Albatross is a very elusive and spectacular sight to see. It includes:
- rapid bill circling
- bowing
- gaping or yawning
- beak clacking or fencing
- an upraised bill to make a 'whoo hoo' sound (the Sky Moo!).
Mating for life, their ritual begins with the male's annual dance, (to re-attract his mate). The performance can take up to 5 days. We watched one, enthralled, as this happened right in front of us - inches away! It lasted oh, almost ten to fifteen minutes and ended with the female deciding this wasn't her mate, and promptly left! (It's happened to me!).
Copy and paste in a browser this footage. http://video.google.com/videoplay?docid=4884152789466423754
Once the pair is successfully reacquainted they produce a single egg and share the responsibility of incubation. The colony remains based on Española until December when the chick is fully grown. By January most of the colony leaves the island to fish along the Humboldt Current. Young albatross do not return to Española until their 4th or 5th year when they return to seek a mate.
Perhaps the most beautiful birds in the world ... they glide like angels.