Why Can’t Some Birds Fly?

Photo by Sander Crombach on Unsplash

It would make a lot more sense if all the birds in the world could fly, but that’s not the case for some species. But why is it that some birds can’t fly?

The adorable animated video created by Gillian Gibb and posted on TED-Ed channel offers an answer to this question. The video covers some of our favorite odd birds that can’t fly, such as penguins, ostriches, and cassowary.