Blood samples from hundreds of Adelie penguins
in Antarctica indicate genetic differences that reflect two distinct lineages.
With less sea ice, Adelie penguins
could be pushed further south but this could hamper their hunts for food during the dark winter months because they needed at least a few hours of daylight to find food, the report added.
Rod Downie, head of polar programs at the World Wildlife Fund, UK, said the impact of losing thousands of chicks was dramatic for an otherwise hardy species such as Adelie penguins
. (WWF has been funding seabird research in the region.) "It's more like 'Tarantino does Happy Feet' with dead penguin chicks strewn across a beach in Adelie Land," he said.
by David Keith & Gernot Wagner An Adelie penguin
stands atop a block of melting ice near the French station at Dumont dUrville in East Antarctica January 23, 2010.
P-P-PICTURE A PENGUIN John filmed this Adelie penguin
colony in the Fish Islands, close to the Antarctic peninsula
The Adelie penguin
population at the bay's Cape Denison was measured to be about 160,000 in February 2011 but by December 2013 it had plunged to an estimated 10,000, they said.
ANIMAL SUPER PARENTS (Friday, BBC1, 7pm) NARRATOR Hugh Dennis observes creatures from a Californian mouse who has to kick-start her partner's paternal instincts to the Adelie penguin
parents who cannot leave their eggs alone for five minutes, and from cheetah mums practising promiscuity, to flamingo parents both producing milk for their young.
We report on the first global census of the Adelie penguin
(Pygoscelis adeliae), achieved using a combination of ground counts and satellite imagery, and find a breeding population 53% larger (3.79 million breeding pairs) than the last estimate in 1993.
On a global scale, the Adelie penguin
population is nearly 3.8 million breeding pairs strong, and 53% larger than estimates of 20 years ago, according to a study by Stony Brook University ecologist Heather Lynch and University of Minnesota College of Science and Engineering researcher Michelle LaRue.
1995, Adelie penguin
Pygoscelis adeliae; Schwaller et al.
Most of the modern nesting sites, including Antarctica's largest active Adelie penguin
colony at Cape Adare with its 150,000 nests, have been around for less than 2000 years.
The emperor penguin can dive almost three times as deep as the Adelie penguin
Dependent on ice for its habitat, the Adelie penguin
population has been halved since 1975; over the same time period, Chinstrap penguins, which usually thrive in warmer climes, have increased their numbers on Anvers Island by several hundred percent.
He made six trips to Antarctica between 1964 and 1971 to study the biochemistry of the Adelie penguin
, and six Arctic trips to study antifreeze proteins in polar fish.