WASHINGTON

Ducks now declining in the U.S., new report shows

At least 112 North American bird species have lost more than half their populations in the past 50 years, according to a new report published Thursday.

Among the birds showing the steepest declines are Allen’s hummingbirds, Florida scrub jays, golden-cheeked warblers, tricolored blackbirds and yellow-billed magpies.

“These are the very real consequences if we are unable to conserve and protect the crucial habitats that birds need,” said study co-author Mike Brasher, a senior scientist at the nonprofit Ducks Unlimited.

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.

The total number of dabbling and diving ducks is down about 30% from 2017, said Brasher. Loss of grasslands habitat and a prolonged drought affecting the wetlands of the Great Plains’ prairie pothole region have taken a toll. Among all waterfowl, numbers are down 20% since 2014, the report found.

The latest report is a collaboration between several groups including Cornell University, Ducks Unlimited, American Bird Conservancy, National Audubon Society and the American Ornithological Society.

There are some 2,000 bird species in North America.

A third of the species examined are rated as high or moderate concern for conservation due to declining numbers, habitat loss or other threats.

These birds “need urgent conservation attention,” said Amanda Rodewald, a study co-author from Cornell.

The report focuses on birds that must breed and feed in specific habitats such as forests, grasslands and coastal regions. Grassland birds including the Bobolink are most at risk.

— The Associated Press