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 ...

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 ...

Schematic illustration showing how repeated dives from shared sea-ice openings lead penguins to encounter krill progressively deeper and farther beneath Antarctic sea ice while feeding rates remain ...

Penguins in one corner of Argentina now have a new land-based threat to worry about: pumas. A study in the journal Proceedings of the Royal Society B finds that in Monte Leon National Park in ...

Large seabird colonies have a surrounding boundary known as Ashmole's halo, where food sources are depleted, forcing the birds to travel farther to gather the food they need. The reason seems ...