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

A wild wood duck found dead in a Saint Louis Zoo lake has triggered multiple exhibit closures and changes, Zoo officials said Friday.

She added that ducks may be great host animals for genetic reassortment to take place because, unlike chickens, they don't get very sick from many avian flu viruses. Therefore, while an infected ...