Sixty-six million years ago, at the end of the Cretaceous Period, an asteroid impact near the Yucat n Peninsula of Mexico triggered the extinction of all known non-bird dinosaurs. But for the early ...

When we think of large birds, we might picture swans, ostriches, or eagles. But which bird is the biggest? Well, it depends on what you mean by big! When considering the "biggest" bird species, ...

That's the way one scientist puts it — referring to how infected wild birds survive long enough to spread it to birds and ...