http://www.wildlifeextra.com/go/news/bird-refuge-louisiana.html#crBird sites most at risk from Gulf oil spill
May 2010. American Bird Conservancy (ABC), the USA's leading bird conservation organization, has released a list of key bird sites they say are most immediately threatened by the ongoing Deepwater Horizon oil spill in the Gulf. The sites have been previously designated as Globally Important Bird Areas by the organization, and are directly in the path of the advancing oil slick.
"This spill spells disaster for birds in this region and beyond," said ABC President George Fenwick. "It is ironic that next weekend is International Migratory Bird Day. At a time when we should be celebrating the beauty and wonder of migratory birds, we could be mourning the worst environmental disaster in recent U.S. history."
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All coastal nesting species (herons, terns, skimmers, plovers, gulls, rails, ducks) are currently present on the Gulf Coast, including several species on the U.S. WatchList of birds of conservation concern. The impact to these species depends on how long the leak lasts and what happens with weather and currents. The leak could persist for weeks or months, and end up being the worst environmental disaster in U.S. history.
Species particularly susceptible to pollution
For species with long lifespans and low reproductive rates (e.g., Reddish Egrets, Least Terns), acute mortality events such as this can have long-term population-level impacts if they affect a large proportion of the breeding population. This is because the adults that survive do not produce young quickly enough for populations to recovery quickly.
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Compounding problems for songbirds, not normally directly affected by oil spills, is the smoke billowing skywards from the burning oil that was set alight to try to minimize damage to marine life.
"Millions of songbirds are crossing the Gulf now, and will arrive Stateside perilously weak and undernourished from their journey. The smoke may well compound their precarious situation and potentially lead to birds failing to make it to shore, or arriving so weakened that they are unable to survive," said Fenwick.