One of mt favorite birds. I'm fortunate to live on their flyway. It is a sure harbinger of Spring or Fall when the flocks are overhead with their haunting chortle. They are fun to observe - when they dance, it is a hoot!
I think the last shot is intersting because it shows how aerodynamically "clean" these birds are - the world's greatest aircraft designer could not beat mother nature's handiwork. 

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Wonderful series. We're hoping to see them at Bosque this winter.












