Grackles on High

I took this picture last week of a bunch of grackles in one of my backyard trees. By my count there's 12 of them but not all are easy to see in this picture. I have the advantage of having taken 5 pictures of the bunch over the course of 15 seconds or so and some of them are hidden in this particular frame. Note, for example, the second grackle at the very top of the picture--hiding behind the other one. You can just see a little tail and the beak. There's another one almost directly below that one--and you can just see a little slice of the head.