Scientists have celebrated a surprising discovery about pterosaurs - the largest flying animals to have ever lived. The ancient reptiles were once tiny tree-climbers but, over time, evolved to ...

There are over 10,000 species of birds in the world. Some, like the bumblebee hummingbird, are very small. Others, like the ...

So they are unique as the first flyers but also among the flying animals. Though their wing ... Live Science mentioned ...

Birds are vertebrate animals adapted for ... have lost the ability to fly but retained their wings. Birds are found worldwide and in all habitats. The largest is the nine-foot-tall ostrich.