Sandhill Cranes at Canyon of Eagles

We awoke in the campground at Canyon of Eagles, TX. to the sound of what, at first, I thought were migrating geese.  On closer inspection, we found that a flock of Sandhill Cranes had risen from the river plain and were circling overhead, gaining altitude above the campground.  I don't know if these were in residence or migrating through, but the sight was awesome.

Part of a mass of hundreds of Sandhill Cranes over the campground

V-formation of cranes heading off

This view of the cranes captures each at a different point in the wing-stroke within the formation.