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1. Where does the name penguin come from? There are several theories. They include:
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For more detail on the origin of the penguin name go to: www.askoxford.com/asktheexperts/faq/aboutwordorigins/penguin |
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2. How many species of penguin are there? They are the largest family of flightless birds in the world with 18 species. |
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* recorded as a vagrant in the Falkland Islands. To find out about a giant fossil penguin discovered in 2007: www.guardian.co.uk/science/2007/jun/26/fossils.uknews?gusrc=rsst&feed=science |
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Countries with the most penguin species are the Falkland Islands (5) and New Zealand (8). About 1 million live in the Falkland Islands. All penguins live in the Southern Hemisphere. The most widely distributed penguin in the Antarctic is the Gentoo penguin. Only two are restricted to the Antarctic: Emperor and Adelie. |
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Yes. Some penguins stay in the water for as long as 5 months, swimming thousands of miles. They can even sleep in the water. They come ashore to breed, moult and grow new feathers. |
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Up to 27 km per hour. They can swim faster and dive deeper than any other bird. Their normal swimming speed is 15 mph or 24 kph. That is the same as the fastest human runner and four times that of the fastest swimmer. |
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The Emperor penguin holds the record for the deepest dive at 535 metres (1,755 feet). King penguins have been known to dive to 323 metres (1,059 feet) and Gentoos 210 (688 feet). Most dive for between 2 and 5 minutes. |
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A Rockhopper penguin takes a flying leap into the sea |
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Penguin feathers are densely packed over their whole body surface. These provide oily waterproofing which is very important in maintaining insulation against cold and wet. A layer of fat also provides insulation, and can be up to 3 cms thick. This is particularly important for over-wintering King penguin chicks. |
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They get all their food from the sea feeding mostly on krill, squid and small fish. Magellanic penguins thrive on sardines, Peruvians take anchovies and South African penguins take pilchards. At the peak of the breeding season the 5 million Adelie penguins nesting on Lawrie Island catch 9,000 tonnes of krill and small fish daily. They also drink salty water from the sea and have special glands to remove the salt in a liquid form. It flows down grooves in a penguin’s beak and drips off the end. |
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Gulls, turkey vultures, striated caracaras, giant petrels, sheathbills and particularly skuas take eggs and chicks. It is estimated that a penguin rookery of 100,000 penguins can support only 10 pairs of marauding scavengers. Gulls and ibises in South Africa can devour up to 40% of jackass penguin eggs. Leopard seals attack adelies, chinstraps, gentoos and rockhoppers and occasionally kings and emperors. There are 100,000 of these animals off the Antarctic coast taking a considerable toll of penguins every year, but penguins can swim faster and often outmanoeuvre them. In the Falklands, sea lions prey on adult penguins near the coasts while Killer whales and fur seals take the occasional penguin too. Penguins are however most threatened by man. Pollution from chemicals, marine debris, oil spills, commercial fishing and global warming are all affecting their lives |
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Yes. They have been known to stay together for 11 successive seasons. A study of adelie penguins estimated the ‘divorce rate’ at 17%. |
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Yes, and often return to the same territory within the rookery. The males arrive first to establish the nest site – which may have to be fought over and defended. If separated, they recognise their partner by voice. |
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Gentoos can use more than 1,700 stones to make one nest. Gentoo penguin nest building |
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They form crèches with the young birds gathering together in groups. This behaviour protects the young birds from aerial predation (particularly skuas, gulls, turkey vultures and caracaras). For Emperors crèches are essential to protect against extremely low temperatures. |
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Up to 25 years. Individuals have been recorded still breeding at 17 – 20 years of age. Some birds do not join the breeding population until they are 9 years old. A penguin in captivity at Edinburgh Zoo lived to be at least 28 years old. |