November 28, 2006 – The Center petitioned the U.S. Fish and Wildlife Service to list 12 species of penguins under the Endangered Species Act due primarily to the impacts of global warming.

June 5, 2007 – The Center filed a notice of intent to sue the Bush administration for failing to respond to the petition.

July 9, 2007 – The U.S. Fish and Wildlife Service found that 10 of the petitioned-for penguin species may deserve protection: the emperor, southern rockhopper, northern rockhopper, Fiordland crested, erect-crested, macaroni, white-flippered, yellow-eyed, African, and Humboldt penguins. The agency began status reviews for these species.

December 3, 2007 – The Center filed a notice of intent to sue the Service for failing to move forward with protections for the 10 species singled out as possibly deserving of listing.

February 27, 2008 – The Center sued the Service to force listing decisions for the 10 penguin species — decisions that were more than two months overdue when our complaint was filed.