Penguin update


>>

>> Dear PenguinPromises

>>

>> The penguins have left Brazil and Promises will now be swimming back home towards

>> the colony. After weeks in Brazil, Promises will arrive home a lot plumper than

>> when leaving the colony earlier this year, skinny after the annual moult. Just

>> as well because the penguins will arrive home to begin a new season of raising

>> chicks, so they need to be in good condition.

>>

>> The penguins remain in sight of the coast as they swim home, and even use the

>> coastline to guide them. When the coastline is on the right-hand side Promises

>> can be sure of swimming in the right direction, which is always south. It is

>> an interesting coastline with lovely sandy beaches, amazing cliffs, a few large

>> cities, and lots and lots of lighthouses.

>>

>> Many of these lighthouses are built on remote islands away from the coast, or

>> on spectacular cliffs and headlands overlooking the ocean. Each lighthouse has

>> its own unique sequence of flashes so that ships know which lighthouse it is.

>> The lighthouses are over 100 years old, but even today with radar and GPS, these

>> lighthouses are still important for marine navigation.

>>

>> I attach a photo showing penguins beside one of the lighthouses that they pass

>> by on their way home. This unmanned lighthouse is situated on a remote uninhabited

>> island 25 miles off the coast of Puerto Deseado in Argentina. The abandoned lighthouse

>> is the only building on the island. It used to be manned, and was built with

>> a red brick house attached to the tower for the lighthouse keepers to live in.

>> That house is now abandoned and used by nesting penguins, as you can see in the

>> second photo. Solar panels charge batteries that now power the light throughout

>> the night.

>>

>> The island is called “Isla Pinguino”, which is Spanish for “Penguin Island”.

>> It is called that because the island is home to thousands of penguins. Many of

>> the penguins swimming alongside Promises will end their journey here, because

>> they have their nests on this island. Despite its name, Isla Pinguino is a very

>> inhospitable place for Magellanic penguins.

>>

>> As you can see in the photo, Isla Pinguino has no bushes and not enough soil

>> to make burrows. It is just rock. The penguins living here have to live sitting

>> on the rocky surface, with no protection from the rain, wind and hot sunshine.

>> It seems an unlikely place for Magellanic penguins to nest.

>>

>> Apart from being surrounded by waters that are rich in fish, Isla Pinguino does

>> have the advantage of having no terrestrial predators. Being such a barren rock

>> miles away from the mainland, there are no foxes or terrestrial predators of

>> any kind living here. The only terrestrial mammals on the island are rats, which

>> are too small to bother the penguins. There are also very few predatory birds

>> on the island because the island has no food for them for much of the year when

>> the penguins are away on migration. A lack of predation seems to be the main

>> attraction for the penguins living here.

>>

>> In that respect Magellanic penguins are very adaptable about where they live.

>> They prefer to live in burrows, but are equally at home nesting under a bush,

>> in a rocky crevice, or even out in the open. At least the penguins on Isla Pinguino

>> have no trouble finding their way home, with a flashing beacon over their nest

>> to guide them home.

>>

>> We are now in early spring here in the south. The days are getting longer but

>> it is still cold. Spring is also the time when the strong winds begin. Patagonia

>> is famous for its strong winds, with Cape Horn being one of the most feared places

>> on Earth for sailors. Of course penguins have no trouble swimming in even the

>> roughest of seas.

>>

>> Penguins are very sociable and always travel together in large groups during

>> their migration. However Promises cannot keep track of who is actually in the

>> group. Out at sea the penguins like the company of other penguins, but do not

>> keep in touch with individual penguins.

>>

>> When penguins raise their head out of the water, their eyes are only a few inches

>> above the water, and the open ocean almost always has waves. So Promises can

>> only see as far as the nearest wave, which is not very far. Every so often a

>> wave will lift the penguins up and give them a quick glimpse of what is around

>> them, before dropping them back down into the trough again. However that is not

>> enough to identify individual penguins amongst all the other penguins, which

>> at a distance all look the same, even to a penguin.

>>

>> So couples travel separately during the winter migration. Keeping in touch with

>> a partner would be impossible. They would be separated the first time one of

>> them went chasing after a fish, and finding each other again would be impossible

>> amongst all the other penguins, and the waves. So partners travel separately

>> in mixed groups and meet up again back at the nest in the spring.

>>

>> When the penguins get back to the colony they meet up again in their nest, because

>> the nest is their only terrestrial home. Just like people always go back home

>> after going anywhere, so too does Promises.

>>

>> Young penguins that are breeding for the first time do not have their own nest

>> yet, and have to find a suitable place to make their nest. They often come across

>> what they believe to be an ideal spot, unaware that it actually belongs to another

>> penguin couple that has not yet returned home. When that happens, a squabble

>> breaks out, and the returning owners of the nest quickly evict the squatter.

>>

>> Upon the return of Promises, the first task is to repair the nest and make it

>> suitable for egg-laying. The eggs will then be laid a couple of weeks later,

>> and once that has happened we will take a new photo of Promises to send you.

>>

>> In the meantime, if you have access to Netflix there is a wonderful series called

>> Penguin Town which I am sure you will enjoy. Many of the activities and behavior

>> that I write about regarding Promises are brought to life in great detail in

>> this excellent series. The series is not too scientific, in fact it is a bit

>> like a penguin soap-opera, following the lives of a few penguins in a story-like

>> manner. The filming is absolutely superb, with lots of really close-up images,

>> and is worth watching just for the quality of filming. If you don’t have Netflix,

>> I expect that sooner or later the series will be available on other channels

>> and media.

>>

>> The series follows African penguins, which are very similar to Promises. However

>> Magellanic penguins take longer to reach maturity, live longer, and travel much

>> further in search of food. So if you are watching the series, remember that some

>> of the information will be different to Promises, even though the overall behavior

>> and life-style is the same.

>>

>> I will write to you again as soon as the egg-laying has taken place, with an

>> up-to-date photo of Promises.

>>

>> Kind regards, Mike

>>

>>

>>

>>
>>
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