In a swim test in a tank, an Adelie penguin
wearing a band expended 24 percent more energy than an unbanded penguin.
Scientists are worried for the Adelie Penguin
, which needs land that is free of snow and ice to raise their young, is likely to lose out to its warm-loving cousins.
Patterson, a geochemist at the University of Saskatchewan in Saskatoon, looked at the chemical composition of Adelie penguin
eggshells laid during the past 38,000 years to see whether the birds' dietary habits had changed.
Shackleton's Russian bag from the first sledging journey into the Antarctic with Scott and Wilson in 1902 will be sold, along with a stuffed Adelie Penguin
(brought back from Scott's last expedition), a 'Grenfell cloth' windproof overall suit and the fur-trimmed Parka actually worn by Noel Odell on the first ascent of Nanda Devi in 1936.
This has, among other threats to nature, resulted in the Adelie Penguin
population shrinking by 33 percent in the past 25 years.
It's spring in the south, and the Adelie penguin
males go about their comical ritual of stone stealing in a bid to build their nests.
Studies have shown long-term declines of around 43 percent in some Adelie penguin
populations (possibly the result of decreasing winter sea-ice, which Adelies use as breeding areas).
The servers, known as the Adelie Penguin
series, will be introduced at the CA-World '99 conference at the New Orleans Convention Center on Saturday, July 17.
To look into the history of these penguins, Lambert and his colleagues scrutinized DNA samples extracted from 96 sets of Adelie penguin
remains buried in sediments at 17 Antarctic breeding sites.
On the Antarctic Peninsula's northwestern coast, Adelie penguin
numbers have dropped dramatically over the past 25 years, WWF's report said, calling for rich nations to agree to steep cuts in greenhouse gas emissions in UN-led climate talks.
Although best known for its tuxedo-like plumage and ungainly waddle, the comical Adelie penguin
is actually one of the world's hardiest birds, able to nest along the harsh Antarctic coastline farther south than most other penguin species.
She also studies how Adelie penguin
populations and sea bird foraging behaviours respond to environmental variation and change.