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.

Many know Northern Virginia for its economic dynamism, cultural development and ever-changing landscape.  Less well known are the places sheltering remnants of an earlier, vital, natural history.  If you would like to discover native birds, other fauna and flora — in the company of dedicated citizen scientists — then consider joining one or more of these continuing natural resource surveys.

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.

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.

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.

Many know Northern Virginia for its economic dynamism, cultural development and ever-changing landscape.  Less well known are the places sheltering remnants of an earlier, vital, natural history.  If you would like to discover native birds, other fauna and flora — in the company of dedicated citizen scientists — then consider joining one or more of these continuing natural resource surveys.

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.

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.

Many know Northern Virginia for its economic dynamism, cultural development and ever-changing landscape.  Less well known are the places sheltering remnants of an earlier, vital, natural history.  If you would like to discover native birds, other fauna and flora — in the company of dedicated citizen scientists — then consider joining one or more of these continuing natural resource surveys.

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.

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.

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.

Many know Northern Virginia for its economic dynamism, cultural development and ever-changing landscape.  Less well known are the places sheltering remnants of an earlier, vital, natural history.  If you would like to discover native birds, other fauna and flora — in the company of dedicated citizen scientists — then consider joining one or more of these continuing natural resource surveys.

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.