DOC’s northern royal albatross live cam has been running for two months. The chick is bringing people together, and connecting them to nature.
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Today’s photo of the week is an image of our #RoyalCam stars – A northern royal albatross dad and it’s 5-day-old chick at Pukekura/Taiaroa Head near Dunedin.
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On the windswept end of the Otago Peninsula comes a rare love story. Lyndon Perriman, DOC Ranger (Biodiversity) explains.
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By Lyndon Perriman, Head Ranger at Taiaroa Head/Pukekura
Perfect weather for young albatross chicks
Summer in Dunedin didn’t seem to stay around for long this year, but I wasn’t complaining. Unlike most years, where fly strike leads to the loss of young albatross chicks, we had such mild weather over the hatching period that no fly strike occurred.
Last season we had 26 chicks fledge. We are hopeful that the 24 chicks on the headland this season will all fledge, making a nice round 50 fledglings in two years.
Seven years abroad: Pukekura’s 500th royal albatross returns
After seven years abroad, the 500th royal albatross chick to have hatched at Taiaroa Head/Pukekura, has finally returned home.
Toroa, the 500th royal albatross chick to have hatched at Pukekura
Toroa, and two other chicks, had transmitters attached to their back feathers when they fledged in 2007.
All three survived their long journey at sea for the first year, after which the transmitters stopped sending back signals. It has been a long wait to see if any of these birds would return.
Map of albatross flight path from New Zealand to Chile.
Toroa, the grandson of ‘Grandma’—the colony’s oldest bird (over 60 years old when last seen in 1989)—arrived home to find his own parents breeding again.
The image below shows Toroa with a two-month old sibling. This chick is on its nest close to where Toroa himself was raised.
Toroa sitting in the background with his two-month-old sibling in the foreground
Toroa has been hanging around this same area not because of any bond with his sibling or his parent (there is no interaction between parents and returned chicks), but because he, like most males, will nest fairly close to the site where he was raised as a chick. Nest sites tend to be closer to the male hatch site than to the females hatch site.
Scurvy explosion
Cook’s scurvy grass (Lepidium oleraceum) has had a population explosion here at Taiaroa Head/Pukekura.
Cook’s scurvy grass has had a population explosion
Just three plants of this threatened species (once abundant and used by Captain Cook to help reduce the effects of scurvy) were on Pukekura last year.
Now, nestled in among the 2000 pairs of red-billed gulls (that produced plenty of quality fertilizer), this species numbers over 40 large healthy plants.
The ice plant in the background of the image above is South African, and was probably introduced onto the headland to help hide the stone and concrete gun emplacements used during the Russian Scare of the late 1880’s.
Interestingly, the ice plant can not tolerate the excreta from gulls and dies back, whereas gull excreta doesn’t affect the native ice plant found in the same area.
Planting for penguins
The Pukekura Trust little penguin colony at Pilots Beach has recently benefited from Air New Zealand Environmental Trust funding.
This allowed several hundred new natives to be planted—mostly by school children—throughout the reserve.
New natives have been planted throughout the reserve
You can see part of the little penguin viewing platform in the image above. Here, at dusk, as many as 300 little penguins waddle in from the sea.
By Lyndon Perriman, head ranger at Taiaroa Head Nature Reserve
Taiaroa Head/Pukekura, at the end of the Otago Peninsula, is home to an impressive number and diversity of seabirds. With nearly 10,000 birds, the area has significant populations of gulls, shags, penguins and shearwaters, but is most well known for the iconic albatross.
Toroa, Taiaroa Head’s 500th chick (hatched 2007) with his dad
Weighing 6-8 kg and with a 3 metre wingspan, the northern royal albatross are one of the largest of the albatross species. The small population at Taiaroa Head is significant as it is the only mainland breeding colony for any albatross species in the southern hemisphere.
Studying foraging strategies
For the northern royal albatross, the beginning of autumn is the start of a phase we call ‘post guard’, where both parents forage at sea for food, leaving the chick alone for several days between meals.
There are many questions about foraging adults that we would like to know the answer to: Are longer trips at sea more productive for the adults? Do foraging areas used by males differ from females? Do the foraging areas change throughout the season?
Ranger Lyndon Perriman monitoring an albatross nest
Junichi Sugishita, a PhD student with the University of Otago, is studying the foraging strategies of the breeding adults at Taiaroa Head and, for the first time, adult birds are being tracked during the post guard stage. The research involves a number of devices situated on land at Taiaroa Head, and also attached to birds.
GPS and radio transmitters
The rangers have a good working relationship with (most) of the albatross at Taiaroa Head, so we were able to attach GPS and radio transmitters to the back feathers of the adult birds without the need for restraint. The combined weight of these two units attached to the feathers is less than 0.6% of the adult’s normal body weight.
Albatross carrying a GPS unit
Weight platforms
Weight platforms were also installed at selected nests. These platforms consist of electronic scales connected to a data logger situated under a plywood base. We had hoped to monitor changes in the weights of adults throughout the breeding season but the albatross had other ideas.
During installation of the scales the birds on the nests showed absolutely no interest, with some adults even choosing to sleep throughout the installation process. However, when they returned from sea to change nest duty with their partner they reckoned there was something decidedly fishy about the platforms. They avoided standing on the scales by choosing an alternative access to their nest.
Skylark on the albatross weighing platform
We then thought we could dupe them by painting the plywood so that it blended in with the surroundings. However, they still weren’t convinced and continued to choose an alternative route into and out of the nest which avoided crossing the scales.
Next we tried coercion by erecting a plastic mesh fence around the nest, so that the best option for access would involve walking over the scales. However, the albatross decided they would rather climb over the fence than cross those scary looking scales.
We finally realised that the albatross would continue to outsmart us. We removed the fences and let them be. It was a gentle reminder to us that what we perceived as non invasive wasn’t considered so by the albatross!
Slow breeders
The royal albatross is a slow breeder, with only one chick raised every two years.
Breeding takes a full year — from mating in October, to incubation of the egg from November to January, followed by nine months of feeding until the chick fledges in September.
Chicks that fledge successfully won’t be seen on the headland again for another five years, when they return to find a mate — and they can be quite picky, taking 2–3 seasons to make a choice. They finally start to breed at around eight years old.
It is this naturally slow breeding biology, coupled with complexities of life on a mainland site, that has restricted the population growth at Taiaroa Head which by 2011 was around 160 individuals.
Albatross have a long memory
Over-handling and restraining of albatross can affect their behaviour and trust of people. As conservation managers we need to weigh up handling, research and manipulation against the negative effects on the bird and their breeding success. This is particularly important at Taiaroa Head as a huge part of management involves manipulation of eggs and chicks at the nest to achieve a high success rate. The success rates are due, in part, to having adult birds tolerant of staff while they inspect their egg or chick.
Flies threaten newly hatched chicks
One of the greatest threats to newly hatched chicks is fly strike. Flies can lay maggots directly onto the hatching egg. Of the 21 chicks hatched in the 2011/12 season, only one died and this was from fly strike. Our best protection against flies during this vulnerable time is to move the hatching eggs into an incubator during the day, returning them to the nest at night.
Hatching eggs in the incubator
Like most years, the hatching/guard stage this season hasn’t been without issue. Three chicks lost significant weight. This indicated a microbial infection in the gut, which a course of antibiotics fixed. All three chicks are now several weeks old and growing rapidly.
One of this season’s sick chick’s in a brooder
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