As the global avian extinction crisis accelerates, the loss of large-bodied birds is destroying local biodiversity and ...

Birds, by design, tend to be small, light and streamlined. Yet there are some that push the boundaries of size. Here is the avian world’s best example of an ultra-heavyweight flyer. Birds of prey are ...

Though previous research has shown that bird populations are declining across North America, a new study is the first to show that the pace of loss has picked up speed since the mid-1980s in three ...