|Near burrow at night, Bruny Island, Tasmania, Australia|
|The Range of the Little Penguin
Subspecies separated by lines
The Little Penguin (Eudyptula minor) is the smallest species of penguin. The penguin, which usually grows to an average of 33 cm (13 in) in height and 43 cm (17 in) in length (though specific measurements vary by subspecies), is found on the coastlines of southern Australia and New Zealand, with possible records from Chile.
Apart from Little Penguins, they have several common names. In Australia, they are also referred to as Fairy Penguins because of their tiny size. In New Zealand, they are also called Little Blue Penguins, or just Blue Penguins, owing to their slate-blue plumage, and they are called Kororā in Māori.
The Little Penguin was first described by German naturalist Johann Reinhold Forster in 1781. There are several subspecies but a precise classification of these is still a matter of dispute. The holotypes of the subspecies Eudyptula minor variabilis and Eudyptula minor chathamensis are in the collection of the Museum of New Zealand Te Papa Tongarewa. The White-flippered Penguin is sometimes considered a subspecies, sometimes a distinct species, and sometimes a morph. As the Australian and Otago (southeastern coast of South Island) Little Penguins may be a distinct species to which the specific name minor would apply, the White-flippered birds indeed belong to a distinct species, although not exactly as originally assumed.
Mitochondrial and nuclear DNA evidence suggests the split between Eudyptula and Spheniscus occurred around 25 million years ago, with the ancestors of the White-flippered and Little Penguins diverging about 2.7 million years ago.
Like those of all penguins, the little penguin's wings have developed into flippers used for swimming. The Little Penguin typically grows to between 30 and 33 cm (12 to 13 inches) tall and usually weighs about 1.5 kilogram on average (3.3 pounds). The head and upperparts are blue in colour, with slate-grey ear coverts fading to white underneath, from the chin to the belly. The flippers are blue. The dark grey-black beak is 3–4 cm long, the irises pale silvery- or bluish-grey or hazel, and the feet pink above with black soles and webbing. An immature individual will have a shorter bill and lighter upperparts.
Distribution and habitat 
Little penguins have also been reported from Chile (where they are known as Pingüino pequeño or Pingüino azul) (Isla Chañaral 1996, Playa de Santo Domingo, San Antonio, 16 March 1997) and South Africa, but it is unclear whether these birds were vagrants.
Rough estimates (as new colonies continue to be discovered) of the world population are around 350,000-600,000 animals. The species is not considered endangered, except for the White-Flippered subspecies found only on Banks Peninsula and nearby Motunau Island in New Zealand. Since the 1960s, the mainland population has declined by 60-70%; though there has been a small increase on Motunau Island. But overall Little Penguin populations have been decreasing as well, with some colonies having been wiped out and other populations continuing to be at risk. However, new colonies have been established in urban areas.
The greatest threat to Little Penguin populations has been predation (including nest predation) from cats, foxes, large reptiles, ferrets and stoats. Due to their diminutive size and the introduction of new predators, some colonies have been reduced in size by as much as 98% in just a few years, such as the small colony on Middle Island, near Warrnambool, Victoria, which was reduced from approximately 600 penguins in 2001 to less than 10 in 2005. Because of this threat of colony collapse, conservationists pioneered an experimental technique using Maremma Sheepdogs to protect the colony and fend off would-be predators.
Like Galápagos penguins, Little Penguins spend the whole day swimming in the sea. They are out at sunrise and hunt into the evening. Little Penguins preen their feathers to keep them waterproof. They do this by rubbing a tiny drop of oil onto every feather from a special gland above the tail.
These birds feed by hunting fish, squid and other small sea animals, for which they travel and dive quite extensively. They are generally inshore feeders. The use of data loggers has provided information of the diving behavior of Little Penguins. 50% of their dives go no deeper than 2 m and the mean diving time is 21 seconds. Yet, they are able to dive as deep as 20m and remained submerged as long as 60 sec.
Little Penguins mature at different ages. The female matures at 2 years old. The male, however, matures at 3 years old. Little Penguins only remain faithful to their partner in breeding seasons and whilst hatching eggs. At other times of the year they do tend to swap burrows. They exhibit site fidelity to their nesting colonies and nesting sites over successive years.
Little Penguins live year-round in large colonies, with each individual breeding pair forming a burrow in which to raise their chicks (of which two are born at a time, usually about 2 days apart). Little Penguins typically return to their colonies to feed their chicks at dusk. The birds will tend to come ashore in small groups to provide some defense against predators which might pick off individuals one by one. In Australia, the strongest colonies are usually on cat-free and fox-free islands. However, the population on Granite Island (which is a fox, cat and dog-free island) has been severely depleted, from around 2000 penguins in the year of 2001 down to 146 in 2009.
Relationship with humans 
South of Perth, Western Australia, visitors to Penguin Island are able to view penguins in a totally natural state. Less than one hour from the centre of the city, it is possible to see Little Penguins in all months, including visiting sensitive areas where they remain on land for extended periods for the purposes of moulting.
At Phillip Island, a viewing area has been set up at the Phillip Island Nature Park to allow visitors to view the nightly "penguin parade". Lights and concrete stands have been erected to allow visitors to see but not photograph the birds interacting in their colony.
In Otago, New Zealand town of Oamaru, where visitors may view the birds returning to their colony at dusk. In Oamaru it is not uncommon for penguins to nest within the cellars and foundations of local shorefront properties, especially in the old historic precinct of the town. More recently, Little penguin viewing facilities have been put in place at Pilots Beach, Otago Peninsula and Dunedin in New Zealand. Here visitors are guided by volunteer wardens to watch penguins returning to their burrows at dusk.
Visitors to Kangaroo Island, South Australia, have the nightly opportunity to commune with penguins at the Kangaroo Island Marine Centre in Kingscote and at the Penneshaw Penguin Centre. Several human-made enclosures have been made to support breeding and shelter, with several people clearing an area for the penguins and burying the huts, most notably The Knox School, when their efforts were filmed and broadcast in 2008 by Totally Wild. There are also nightly tours of Granite Island. South of Adelaide, South Australia is home to a colony of 2000 fairy penguins. You are able to see the penguins every day in their natural habitat with guided tours every day at dusk. There is also a penguin centre where you can feed and interact with penguins.
Mascots and logos 
Linus Torvalds, the original creator of Linux (a popular operating system kernel), was once pecked by a Little Penguin while on holiday in Australia. Reportedly, this encounter encouraged Torvalds to select Tux as the official Linux mascot.
Sea World 
There is a colony of Little Penguins at Sea World, on the Gold Coast, Queensland, Australia. In early March, 2007, 25 of the 37 penguins died from an unknown toxin following a change of gravel in their enclosure. It is still not known what caused the deaths of the Little Penguins, and it was decided not to return the 12 surviving penguins to the same enclosure in which the penguins became ill.
A new enclosure for the Little Penguin colony was opened at Sea World in 2008.
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Little Penguins in the wild are sometimes preyed upon by New Zealand fur seals. A study done by researchers from the South Australian Research and Development Institute (based at the Waite campus of the University of Adelaide) found that roughly 40 percent of seal droppings in South Australia's Granite Island area contained Little Penguin remains.
Little Penguins on Middle Island in Warrnambool, Victoria were subject to heavy predation by foxes, which could reach the island at low tide by a tidal sand bridge. The deployment of Maremma sheepdogs to protect the penguin colony has deterred the foxes and enabled the penguin population to rebound. This is in addition to the support from groups of volunteers who work to protect the penguins from attack at night.
In Sydney, snipers have been deployed to protect a colony of Little Penguins. This effort is in addition to support from local volunteers who work to protect the penguins from attack at night.
See also 
- BirdLife International (2012). "Eudyptula minor". IUCN Red List of Threatened Species. Version 2012.1. International Union for Conservation of Nature. Retrieved 16 July 2012.
- Grabski, Valerie (2009). "Little Penguin - Penguin Project". Penguin Sentinels/University of Washington. Retrieved 2011-11-25.
- Dann, Peter. "Penguins: Little (Blue) Penguins - Eudyptula minor". International Penguin Conservation Work Group. Retrieved 2011-11-25.
- "Eudyptula minor variabilis; holotype". Collections Online. Museum of New Zealand Te Papa Tongarewa. Retrieved 17 July 2010.
- "Eudyptula minor chathamensis; holotype". Collections Online. Museum of New Zealand Te Papa Tongarewa. Retrieved 17 July 2010.
- Banks, Jonathan C.; Mitchell, Anthony D.; Waas, Joseph R. & Paterson, Adrian M. (2002): An unexpected pattern of molecular divergence within the blue penguin (Eudyptula minor) complex. Notornis 49(1): 29–38. PDF fulltext
- Baker AJ, Pereira SL, Haddrath OP, Edge KA (2006). "Multiple gene evidence for expansion of extant penguins out of Antarctica due to global cooling". Proc Biol Sci. 273 (1582): 11–17. doi:10.1098/rspb.2005.3260. PMC 1560011. PMID 16519228.
- Williams (The Penguins) p. 230
- Dann, Peter (2005). "Longevity in Little Penguins" (PDF). Marine Ornithology (33): 71–72. Retrieved 17 September 2012.
- "Birds of world significance: Babel Island Group, Tasmania". Atlas of Australian Birds. Birds Australia. Retrieved 29 November 2011.
- "BBC - Science & Nature -Sea Life - Fact Files: Little/Fairy penguin". bbc. 2005-07. Retrieved 2011-11-25.
- Vieru, Tudor (2009-01-07). "Sheepdogs Guard Endangered Fairy Penguin Colony". Softpedia. Retrieved 2011-11-25.
- Numata, M; Davis, L & Renner, M (2000) "[Prolonged foraging trips and egg desertion in little penguins (Eudyptula minor)]". New Zealand Journal of Zoology 27: 291-298
- Bethge, P; Nicol, S; Culik, BM & RP Wilson (1997) "Diving behaviour and energetics in breeding little penguins (Eudyptula minor)". Journal of Zoology 242: 483-502
- Ropert-Coudert Y, Chiaradia A, Kato A (2006) "An exceptionally deep dive by a Little Penguin Eudyptula minor". Marine Ornithology 34: 71-74
- Tourism Victoria. "Phillip Island Penguin Parade". Visit Victoria. Retrieved 21 July 2011.
- "Oamaru Blue Penguin Colony". Penguins.co.nz. Retrieved 2012-06-12.
- "Blue Penguins Pukekura". Bluepenguins.co.nz. Retrieved 2012-06-12.
- "Penneshaw Penguin Centre". Tourkangarooisland.com.au. Retrieved 2012-06-12.
- "Granite Island Recreation & Nature Park : Penguin Tours South Australia". Graniteisland.com.au. Retrieved 2012-06-12.
- "Granite Island Penguin Centre : Looking after the Little Penguins of South Australia". Graniteisland.com.au. Retrieved 2012-06-12.
- ""Tux" the Aussie Penguin". Linux Australia. Archived from the original on 2006-05-07. Retrieved 2006-06-25.
- "FINA". Melbourne, 2007. Retrieved 2012-06-12.
- Protecting our Little Penguins (Victorian Government website)[dead link]
- "Mystery penguin deaths at Sea World". Australian Broadcasting Corporation. Retrieved 15 August 2012.
- Authorities find unknown toxin in Sea World Penguins[dead link]
- Sea World probes mysterious deaths[dead link]
- Penguin deaths remain a mystery[dead link]
- Penguins —Environment, South Australian Government
- Littlely, Bryan (2007-10-10). "Fur seals threat to Granite Island penguins". The Advertiser. p. 23
- "Dogs come to fairy penguins' rescue". Special Broadcasting Service. 5 January 2009. Retrieved 2009-01-07.
- "Penguin murders prompt sniper aid". BBC. 16 July 2009. Retrieved 2009-07-16.
Further reading 
- Williams, Tony D. (1995). The Penguins. Oxford, England: Oxford University Press. ISBN 0-19-854667-X.
|Wikispecies has information related to: Eudyptula minor|
|Wikimedia Commons has media related to: Eudyptula minor|
- Little penguins at New Zealand Penguins
- Little penguins at the International Penguin Conservation
- The Blue Penguin Trust (New Zealand)
- Philip Island Nature Park Web Site
- Gould's The Birds of Australia plate
- Fairy Penguin on Google Video
- Roscoe, R. "Little (Blue) Penguin". Photo Volcaniaca. Retrieved 13 April 2008.