Oil spill gallery (6 of 21)

Birds fly over a band of oil in this view of the Gulf of Mexico, south of Louisiana, where oil leaking from the Deepwater Horizon wellhead continues to spread in this photograph taken on April 28, 2010. The U.S. Coast Guard said on Wednesday five times as much oil as previously estimated was leaking from a well beneath the site of a deadly drilling rig explosion as the slick threatened wide-scale coastal damage for four U.S. Gulf Coast states. The leak is now estimated at 5,000 barrels per day - five times than previously estimated. (REUTERS/Sean Gardner/Greenpeace/Handout)