What an amazing "murmuration". Thank you for sharing this awesome video and for the new word. I've watched it twice and both times found myself wishing there was no music, not because it's unpleasant music but because I'd prefer to hear the actual sounds only.
When they gather and get dense they look as though they are about to take form in some collective entity. Such a striking image of the individuals collecting becoming a powerful one. I think it's this metaphor that moves me. Just knowing that this many individuals can act collectively is both encouraging and terrifying.