Environment News Service: Nearly one-third of the more than 800 bird species in the United States are endangered, threatened or in decline due to climate change, habitat loss, and invasive species, finds the first comprehensive report ever produced on U.S. bird populations. At a news conference in Washington today, Secretary of the Interior Ken Salazar released the report, which was developed by a partnership among the U.S. Fish and Wildlife Service, the U.S. Geological Survey, state government wildlife …