Chihuahuan Ravens: Jan, 2011 clip of hundreds flying overhead

I got this clip a few days ago on my return trip through the Lamesa, TX area. These are only a small part of the very large congregation of more than a thousand I found north of Lamesa--hundreds flying, hundreds perched in trees and hundreds sharing an area that likely included a pond with hundreds of Sandhill Cranes. The sound of the Chihuahuan Ravens comes pretty clear in this clip as hundreds of the birds fly overhead. SeEtta