Even small amounts of oil made birds near Deepwater Horizon sick. Findings could not be published until now because they were used in the legal settlement that was finalized last year, in which the oil company BP was ordered to pay $8.8 billion for restoration efforts.

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Even small amounts of oil made birds near Deepwater Horizon sick. Findings could not be published until now because they were used in the legal settlement that was finalized last year, in which the oil company BP was ordered to pay $8.8 billion for restoration efforts.