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.

WASHINGTON (AP) — At least 112 North American bird species ... a senior scientist at the nonprofit Ducks Unlimited. For several decades, waterfowl stood out as a conservation bright spot with ...

WASHINGTON (AP) — At least 112 North American bird species ... a senior scientist at the nonprofit Ducks Unlimited. For several decades, waterfowl stood out as a conservation bright spot with ...