In the U.S. 42 species of birds have low and steeply declining populations that put them on the brink of disaster, scientists ...

To survive in so many different habitats, the world’s 10,000 or so bird species have evolved into a spectacular diversity of forms. They range in size from the ostrich, which can reach nine feet ...

State of the Birds report identifies 112 "tipping point" species — those that have lost more than half their populations in ...

Sea ducks such as Common eiders, grassland birds such as Western meadowlarks and Lark buntings, and forest species such as ...

This means that while these two groups were considered slightly different ... three species likely evolve? The archipelagic nation of Indonesia comprises an astonishing 18,000 islands, many of which ...