Did you know that there are some birds that can swim and fly? Did you also know that birds are descendants of a group of dinosaurs called theropods? Theropods are characterized by hollow bones ...

Birds today make flight look effortless, but its evolution was complex. Scientists are still trying to discover exactly how birds took to the skies, and today, a new perspective has emerged by ...

Birds are vertebrate animals adapted for flight. Many can also run, jump, swim, and dive. Some, like penguins, have lost the ability to fly but retained their wings. Birds are found worldwide and ...

These lessons were designed to accompany the first two parts of the PBS Life of Birds series. Although this lesson plan was developed primarily for grades 9-12, teachers of elementary or middle ...