At the same time, the report highlights examples, including many species of waterfowl, where habitat restoration and conservation have reversed previous declines, offering hope that it is not too late to take action to save declining populations.

"Just as they were when Rachel Carson published "Silent Spring" nearly 50 years ago, birds today are a bellwether of the health of land, water and ecosystems," Salazar said. "From shorebirds in New England to warblers in Michigan to songbirds in Hawaii, we are seeing disturbing downward population trends that should set off environmental alarm bells. We must work together now to ensure we never hear the deafening silence in our forests, fields and backyards that Rachel Carson warned us about."

The report, The U.S. State of the Birds, synthesizes data from three long-running bird censuses conducted by thousands of citizen scientists and professional biologists.

Read the news release.

Visit the State of the Birds website.

Audubon joins the U.S. Fish and Wildlife Service and a host of top-flight conservation organizations to issue a critical call to action for people everywhere. Read their statement.