For several decades, waterfowl stood out as a conservation bright spot with duck populations growing nationwide even as many other groups of birds declined in the U.S. But that trend has reversed, the new data shows.

This year's State of the Birds report has worrisome updates on the population numbers for U.S. birds — including the Allen's hummingbird.

Sea ducks such as Common eiders, grassland birds such as Western meadowlarks and Lark buntings, and forest species such as Pinyon jays in the West and Bachman's sparrow in the East are among a wide variety of bird species that are in serious declines,

For several decades, waterfowl stood out as a conservation bright spot with populations of ducks growing nationwide even as many other groups of birds declined in the U.S.

About one-third of all American bird species are of high or moderate conservation concern due to low populations, declining population trends, or other threats.

More than five years after a landmark study in the journal Science showed that North American bird populations declined by nearly 30% since 1970, a new report finds that the concerning trend is c