Sandhill Cranes in conflict

This is one of my favorite pics of Sandhill Cranes. The bird with it's wing's extended has jumped into the air while having a conflict with the crane directly in front of it (with it's beak directed up towards it). While I watched this flock for 20 minutes or so, there were numerous conflicts between cranes, often involving similar skirmishes. This is a good pic to enlarge by double-clicking. SeEtta