Associated Press: AUSTIN, Texas — An Interior Department report says global climate change poses a significant threat to migratory bird populations already stressed by the loss of habitat and environmental pollution. U.S. Interior Secretary Ken Salazar joined scientists and conservation organizers at an Austin news conference Thursday to release a study entitled “The State of the Birds: 2010 Report on Climate Change.” The report says oceanic birds, such as petrels and albatrosses, are at …