A new report says at least 112 North American bird species have lost more than half their populations in the past 50 years.

The first week of March came with a roller coaster of emotions.

ALAMEDA, CA — Carol Bernard caught this photo of a mallard duck pair as they took flight at Encinal Basin in Alameda on Monday. The photo captures their powerful wings extended, with individual flight ...

Herrick said mallards are an introduced species and need to be controlled, and following a very wet spring, their numbers ...

Knowing where, when and for how long mallard ducks—natural carriers of avian influenza—stop and rest as they migrate can help predict the probability that they will spread bird flu to backyard ...

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