I constantly see signs. Most come true, and some don't. In my belief, though, the universe is constantly sending us signs - it is up to us to see them and get the message!
My signs come via tons of number sequence synchronicity (always managing to look at clock or see time or message number 111), ravens, hawks, posters in windows, and snatches of convo overheard in public places.
G6, I hope your blackbirds did mean positive new things for you! That is certainly how I would have taken the message