Beating around the bush

I read somewhere online that a flock of robins is a sign for a fresh, new start, or for something wonderful to happen to you...but what if that flock of robins dive bombs you as you try to go into your apartment?! This happened to me. First off, what the heck are all those robins doing here? Shouldn't they be south? Secondly, since when are robins aggressive to the point odive-bombing? I am truly confused, a little scared of birds now, but as always, very amused and glad it happened to me.