US Interior Secretary Ken Salazar has warned that with the increased threats of climate change some bird species are becoming endangered.
"For well over a century, migratory birds have faced stresses," Salazar said. "Now they are facing a new threat -- climate change -- that could dramatically alter their habitat and food supply and push many species towards extinction."
All 67 oceanic bird species, including albatrosses, petrels and puffins, are at particular risk because they produce few offspring each year and their habitats are most susceptible to climate change phenomena.
Birds that depend upon the ocean for survival "are among the most vulnerable birds on Earth to climate change," warned the report put together by the US Fish and Wildlife Service in coordination with several environmental groups.