Add Yahoo as a preferred source to see more of our stories on Google. Pumas are now preying on Patagonia’s coastal penguin colonies at high rates, raising new conservation concerns. Rising puma ...

Add Yahoo as a preferred source to see more of our stories on Google. Reintroducing keystone predator species can have a near-miraculous restorative effect on ecosystems. This is what I would remind a ...

Some Argentinian penguins are experiencing high levels of predation from pumas recolonising their historical territory. A new study has quantified the risk on long-term penguin population survival.

Off the southern coast of Argentina, Patagonia is home to millions of yellow-eyed Magellanic penguins. Each day, adults step out of their colonies, bobbing their plump white bellies, to forage for ...

A group of pumas in Monte León National Park, in Argentina's Santa Cruz province, has incorporated penguins as a regular part ...

A natural experiment in a national park in Patagonia shows how the return of a large predator can reshape an ecosystem. Long absent from Argentinian Patagonia due to over-hunting, pumas have returned ...

EDITOR’S NOTE: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

Along South America’s windswept southern coast, Magellanic penguins have spent decades nesting in relative safety. For much of the twentieth century, sheep ranching dominated the region, and pumas ...