Assumed to be obvious before it was observed (how else?).
Seen and filmed many many times for adults leaping into the water.
Already documented: 'witnessed by scientists'.
Published by a site called petapixel with breathless words like 'astonishing', 'unprecedented', 'enormous cliff', 'huge jumps', 'rare and heart-stopping', 'extraordinary footage', 'huge ice cliff', 'brave chick' ... in an effort to create buzz for their sponsor National Geographic.
The only mildly interesting phrase is: 'Scientists who monitor penguins from satellites'. Sounds like a fun job and I'm sure AI can help. I didn't know that (although I once helped the BAS effort to monitor elephant seals diving deep in the S.Atlantic, using radio transponders glued to their backs, with burst-transmit-on-surfacing via satellite, so I should not have been surprised, had I thought for a second). But then they spoil it by adding 'satellites...in space'.
If the chicks were drawing lots to see who had to jump first, then I might be interested.