Emperor Penguins Huddle
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Emperor penguins in a huddle during a snow-storm. Normally penguins are very territorial and will not approach each other easily, but this behaviour is one of the ways that emperor penguins manage to survive successfully in the depths of the Antarctic winter. Scientific measurements and calculations have shown that by huddling together, emperor penguins use about half the energy that they would otherwise and would starve to death over the winter rather than come through and raise chicks as well.
The emperor penguin ( Aptenodytes forsteri ) is the tallest and heaviest of all living penguin species and is endemic to Antarctica . The male and female are similar in plumage and size, reaching 122 cm (48 in) in height and weighing from 22 to 45 kg (49 to 99 lb). The dorsal side and head are black and sharply delineated from the white belly, pale-yellow breast and bright-yellow ear patches. Like all penguins it is flightless, with a streamlined body, and wings stiffened and flattened into flippers for a marine habitat .
For prehistoric genera, see Systematics
The waves happen when the penguins huddle together, a behavior that helps them stay warm in an environment that can reach -50 degrees Celsius (-58 degrees Fahrenheit) with winds up to 200 kilometers per hour (about 120 mph). Thousands of individuals can gather together in a huddle. And once in a while, someone moves. That triggers shifts throughout the system that researchers see as waves. Now, a team of researchers from Germany and France has figured out the mathematics of these waves, as you do.