At this time of year in Toronto, hundreds of starlings flock together at dusk in treetops and on phone lines all over town. The first time I saw this was just after I moved here in the fall of 1985. I was in the garden when I was aware of a kind of darkness that had settled all around me, and this incessant chirping. When I looked up, I had visions of a bloody-faced Suzanne Pleshette and a messed-up Tippi Hedren. This was my introduction to these garrulous birds.
Anyway, I just tripped over this video, shot in southern Scotland earlier this year. I find it utterly mesmerizing.
Keep an eye on the outer edge of the flock where a sparrow hawk is trying to pick off some dinner. It's very easy to miss that.
How they don't all go crashing into each other has to be one of the many many wonders of this beautiful world.