An exhausted oil-covered brown pelican sits in a pool of oil along Queen Bess Island Pelican Rookery, 3 miles (4.8 km) northeast of Grand Isle, Louisiana June 5, 2010. Wildlife experts are working to rescue birds from the rookery which has been affected by BP's Gulf of Mexico oil spill, and transporting them to the Fort Jackson Rehabilitation Center. REUTERS/Sean Gardner (UNITED STATES - Tags: ANIMALS DISASTER ENERGY ENVIRONMENT IMAGES OF THE DAY)