There are over 10,000 species of birds in the world. Some, like the bumblebee hummingbird, are very small. Others, like the common ostrich, do not fly. If you consider birds that fly, then these are ...

Flightless species of birds (such as ostriches, which are the largest living birds) tend to outsize any of the largest birds ...

Do you know why blue-footed boobies have blue feet? Author Laura Erickson does, and you’ll find the answers to this and many ...

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