Hopefully I added a link appropriately. Not trying to shout myself out, I just literally can't find any other video involving them at all.
I put a short video up on YouTube of a new encounter. I haven't figured out how to talk to them. Using the Speak With Animals spell you can understand them, but they don't seem to really do anything, but if you bother all three they fight you.
If you know anything, let me know because either Google is Busted, or nobody has ever seen them ever before in all of Baldur's Gate 3...and I find that hard to believe.