That’s not a distant dog barking. It’s a Black Skimmer in flight, at the Chincoteague National Wildlife Refuge in Virginia. This striking, black-and-white bird with a red bill and red feet has a most unusual way of feeding. It flies low along the surface of the water with its beak open. Closely related to terns, skimmers nest on sand islands in closely packed colonies. They depend on undisturbed islands and abundant small fish in coastal lagoons for their survival.

More info and transcript at BirdNote.org. 

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