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

A female wood duck is an overall gray with some ... Learn all about the common mallard duck. Wood ducks eat aquatic plants, acorns, beechnuts, grapes and berries, as well as a few insects.

The eider, twice as heavy as a mallard, is Europe’s biggest duck. On leaving the nest, the female covers her eggs in down ...