Wandering around Grant Park on Monday (seeing if there was any bird migration activity and checking out the music at the Pritzker Pavilion), I saw waves of bird flocking and flying overhead. I think they are starlings; at least that's what I saw a LOT of in Grant Park. I took a few photos and found the mini patterns within the flocks interesting.
Here's a wide view of one of the waves going over.
Update: Back in July, I posted some pictures from the Outdoor Movies in Grant Park. During the Duck Soup movie showing, Chicago attempted to set the world record for most people wearing Groucho Marx glasses at the same time. Heard last night, at the LAST outdoor movie of the summer, that with 4,436 wearers Chicago does indeed now hold that record. We're so proud! ;)