Chinstrap and macaroni penguins nesting on the volcanic slopes of Zavodovski Island. | Nicole Richters via British Antarctic Survey This story was originally published by The Guardian and is reproduced here as part of the Climate Desk collaboration. The world’s largest penguin colony has declined by two-thirds since 2011, most likely because of the climate crisis, a study has revealed. Scientists said the rapid demise of chinstrap penguins on Zavodovski, the northernmost of the South Sandwich Islands in Antarctica, increased the risk of a wider ecosystem collapse. “It is an enormous...