Poop stains reveal penguins migrate with climate

June 25, 2014 3:20 PM

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Poop stains reveal penguins migrate with climate

In the face of rising temperatures, emperor penguins in Antarctica may be forced to find new breeding grounds instead of returning to the same spot to mate year after year, new research finds.

Scientists are tracking this climate-driven march by studying the penguins' poop stains; in satellite images, the birds' dark droppings against a gleaming white backdrop of ice reveal their every move.

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