For birds, flocks promise safety, especially if you’re faster than your neighbor

As I walked along Bolivar Flats, just across from Galveston Island in Texas, I watched flocks of sanderlings forage along the frothy wavefront as it surged and retreated. Nearby, Caspian terns, American avocets, and black skimmers rested on the beach, each in its own group.

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The Owl Picks