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To sight a soaring Albatross is unforgettable
- a spectacle touched with a dignity and majesty no other
bird can excel.
Held aloft on slim wings up to 3 metres (9'6") across,
the great Albatross is capable of swooping speeds of at
least 115kph+. It's pure ecstacy in the air, yet distinctly
clumsy on the ground. You'll find the social and family
life of the breeding colony fascinating. Chicks are fussed
over by devoted parents, adolescents party, just like adolescents
everywhere, courtships proceed with lots of kissing and
cuddling, and "marriage" is usually for life despite long
separations at sea. And the life of an Albatross is indeed
long - one bird at Taiaroa, fondly known as "Grandma," raised
her last chick at age 62!
Albatrosses
on remote storm-bound islands have little to fear, but
when these large, conspicuous birds nest near a city it
presents a very different situation. Between 1914 and 1919
Royal Albatrosses were known to land at Taiaroa Head, and
in 1920 the first egg was found there. In 1937, Dr L.E.
Richdale, an ornithologist of Dunedin, strove to protect
the colony from interference. Their efforts were rewarded
in 1938 when the first Taiaroa-reared chick flew. In 1951
a full-time field officer was appointed to act as caretaker
of the albatross colony and as wildlife ranger of Otago
Peninsula.
From
1937 Dr Richdale studied these and other birds, especially
yellow-eyed penguins, and published his findings in several
books, scientific papers and pamphlets. His studies, and
those since, include the banding of nesting albatross and
chicks. The numbered band, clipped loosely about the leg,
allows the life story of each bird to be recorded. Since
all Taiaroa birds and chicks are banded, they can be distinguished
from other albatross that are sometimes attracted to Taiaroa
Head and may stay to breed. The size of the colony has
slowly increased and this year there are currently 130
birds in the Colony population.
It
has been difficult to protect the birds from introduced
predators (cats, dogs, ferrets and stoats) and the natural
curiosity of visitors can have a damaging effect. Rabbits
threaten soil and vegetation, fire is an ever-present danger,
and the variation of climate and food supply have their
indirect effect. These problems have been largely overcome
by erecting and maintaining fences to prevent unauthorised
public access, and by the vigilance of the local field
staff.
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The
breeding birds arrive at Taiaroa Head in September. The
nest, built during early November, is formed by a bird
sitting down and pulling vegetation and earth around itself
with its bill. The white egg, weighing up to 500 grams,
is laid during the first three weeks of November. The parents
share incubation duty in spells of two to eight days over
a period of 11 weeks - one of the longest incubation periods
of any bird. The incubating bird sleeps much of the time
its mate is away.
When
the chick has hatched, the parents take turns at guarding
it for the first 30 to 40 days, and the feeding of the
chick is also shared by both parents. Nearly 12 months
after their arrival at Taiaroa Head, having cared for egg
and chick over a period of some 300 days, the parents will
leave the colony to spend a year at sea before returning
to breed again. The chicks hatch during late January and
early February; it takes about three to six days to finally
emerge from the egg after making a hole in the shell.
For
the first 20 days the chick is fed on demand, then meals
decrease to three or four times a week. At 100 days the
chick's down reaches a maximum length of 12 centimetres.
At this age the chick is fed larger meals, up to two kilograms
at a time, of more solid substance. From early August the
chick is fed lighter meals and in September, when fully
fledged, it wanders from the nest testing its outstretched
wings and eventually takes off with the aid of a strong
wind. The young albatross will spend the next three to
six years at sea; many then return to this unique headland
to start another generation of Royals of Taiaroa.
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