Cincinnati Zoo? I saw them perform their march the other year. I think they stopped because the flock was getting too old
https://www.cincinnati.com/story/news/2024/01/08/cincinnati-...
https://www.cincinnati.com/story/news/2024/01/08/cincinnati-...
It's a pretty fun little event. The penguins seem to really enjoy it, they're always checking out the crowd
The Penguin walk doesn't run all year, something like Nov-March. It's ended for this year unfortunately