While out working on a story, I heard the faint calls of some Sandhill Cranes... I can't describe it, but it was a HUGE flock of them flying overhead. Had to be over 100 birds in the flock, and they were UP THERE. I tried to get some video of them, not sure if I did. I'll look here in a minute. There were two "V" formations, one was huge, the other a little smaller. Cool birds too. I really like their calls.