Murmurations are so hot right now, they’re showing up in federal economic working papers. Which is probably more than you can say for steampunk.
More links on the ever-fascinating murmuration phenomenon:
Pop culture: How hot were murmurations in, say, 1936? (ask Google n-grams)
Article: “A Darwinian Dance” by Grainger Hunt
Science: Current Biology short review on murmurations
Eyecandy: photos and videos of murmurations