Birds; Birdwatching; Connecting people with nature; Perching birds;
Pair of Eastern bluebirds preparing a nest in a bird house on the campus of the U.S. Fish and Wildlife Service's National Conservation Training Center.
These two native specimens were pulled from the Potomac River during a survey near Shepherd's Island, MD. Of the two, the mollusk on the left - a Brook Floater, is considered a "species of concern".