April 25th is “World Penguin Day”, undoubtedly the world’s most popular bird – think of Happy Feet, March of the Penguins, Pingu just to name a few uses in popular culture. These charismatic flightless birds are funny to watch on land but are graceful and rapid in water. They occur only in the seas of the Southern hemisphere; there are seventeen species of penguin ranging from the Galapagos to Antarctica.
Scientists say an estimated 150,000 Adelie penguins have been wiped out on Antarctica's Cape Denison in the five years since a giant iceberg blocked their main access to food. A study recently published in the journal Antarctic Science says the B09B iceberg crashed with the Mertz Glacier Tongue and got stuck in Commonwealth Bay, an area that was rarely covered by sea-ice, making it ideal for Adelie penguin colonies.
Miniature cameras attached to a penguin's head have given Japanese scientists a bird's eye view of the creature's incredible underwater hunting skills. Using video cameras weighing just 33 grams and equipped with accelerometers, depth gauges and thermometers, researchers were able to see exactly what the Adelie penguin sees when it goes out to catch krill and other prey in its native Antarctica.
Accounts of unusual sexual activities among penguins, observed a century ago by a member of Captain Scott's polar team are finally being made public.
A number of penguin species found in western Antarctica are declining as a result of a fall in the availability of krill, a study has suggested. Researchers, examining 30 years of data, said chinstrap and Adelie penguin numbers had been falling since 1986.