Dyke Marsh Butterfly and Dragonfly Survey
Dyke Marsh Wildlife Preserve Alexandria(VA) (Northern Virginia Bird Alliance) Butterfly and dragonfly surveys are carried out in temperate months (April-October), normally on Friday mornings, at one of four sites around Occoquan Bay, all within the 15-mile diameter circle established for the annual North American Butterfly Association's Annual Count. The results of these surveys are made available to the participants and other interested individuals and ...
Free