BBC Discovers Flying Penguins

On a day in the beginning of April a few years back, the BBC aired the following video. There’s been a new discovery in Antarctica: flying penguins.
[youtube https://www.youtube.com/watch?v=9dfWzp7rYR4]
Here’s how the video was made:
[youtube https://www.youtube.com/watch?v=lzhDsojoqk8]
Happy April Fools day!