Scientists first learned "routine" Emperor penguins, using sensors to track the birds in the water as it turned out, these penguins spend on floating ice a third of life, relaxing and escaping from marine predators, according to a paper published in the journal PLOS ONE.
Japanese and American scientists first studied the "rhythm of life" of emperor penguins. Until now, the lives of these birds, little has been known, since most of the time they spend in the water, where they are difficult to track. However, the use of new technology — special sensors that are mounted on the bird — have produced accurate data.
As it turned out, the Emperor penguins spend in water for a total of about 70% of the time, getting the fish, other times — on the ice. Scholars have noted that, while on the ice, the birds spend most of the time to rest, be safely left in place. According to the data from the sensors, the penguins can spend in the water continuously up to 4.8 hours.
According to one of the authors of the work, of the University of Fukuyama (Japan), Shinichi Watanabe (Shinichi Watanabe), floating ice plays an important role in the life of emperor penguins also because they serve as a refuge from predators, such as leopard seals.
Watanabe also believes that the new technology that allows to determine precisely the time spent on the ice birds, will evaluate how the shrinking of sea ice off the coast of Antarctica in the case of increasing ocean temperatures could affect the populations of penguins.