Alexandria West , Virginia — The American South (Mid-Atlantic)
Protecting Threatened Species
Environmental Interpretive Series
In the late 1950s, the Northern Virginia Planning District Commission and a group of residents from several jurisdictions joined together to protect the region's rich heritage of woods, meadows, lakes, and streams from the threat of suburban sprawl.
These residents, working with their local governmentsFairfax County, Arlington County and the City of Falls Churchorganized in 1959 under the Virginia Park Authorities Act as the Northern Virginia Regional Park Authority. This was the beginning of an extensive system of regional parks for all to enjoy.
Today, the organization now known as NOVA Parks represents three counties and three citiesArlington, Fairfax, and Loudoun counties and the cities of Alexandria, Falls Church, and Fairfax.
NOVA Parks staff, volunteer board members from each jurisdiction, and countless friends of the regional parks have worked together to preserve over 12,000 acres. This land and water is not only valuable open space for humans, but priceless habitat for threatened and endangered species. Three such species are highlighted here.
Bald Eagle
NOVA Parks' focus on preserving land along waterways plays a large role in protecting and increasing the population of bald eagles, who primarily feed on fish.
The national symbol of the United States, the bald eagle was a rare sight not too long ago. Its population was in decline from the effects of pesticides and habitat loss. In 1963, there were only 417 active bald eagle nests in the lower 48 states. Aggressive conservation measures increased the nests to 71,467 by 2020, one of the greatest success stories of a species in danger of extinction.
Mason Neck in southern Fairfax County has always been home to bald eagles, but that area was threatened by development in the 1960s. NOVA Parks acquired 1,800 acres of land along Pohick Bay and Belmont Bay to preserve this sensitive environment.
Most of the property became Pohick Bay Regional Park, while 789 acres was leased to the U.S. Fish and Wildlife Service as part of the 2,277-acre Elizabeth Hartwell Mason Neck Wildlife Refuge. Hartwell, a NOVA Parks board member, lived on Mason Neck and fought to protect the land and eagles.
Wood Turtle
Wood turtles, Glyptemys insculpta, make their homes in small creeks and have

Photographed by Devry Becker Jones (CC0), March 31, 2026
2. Protecting Threatened Species Marker on the grounds of Winkler Botanical Preserve
Wood turtles are omnivorous and feed on land and water. Favorite foods include flowers, fruits, mushrooms, slugs, and earthworms. In the water, they eat many types of insects and invertebrates.
Since they can't close their shells like some other turtles, they are vulnerable to raccoons, otters, foxes and snapping turtles. Loss of habitat to development is an even larger threat. Wood turtles are considered threatened in Virginia and a "Species of Greatest Conservation NeedTier 1a" on the Virginia Wildlife Action Plan.
Collecting wood turtles is illegal in the state of Virginia and on NOVA Parks properties.
Small Whorled Pogonia
The small whorled pogonia, Isotria medeoloides, is a perennial and member of the orchid family. This blooming flower is found along the east coast and westward as far as Illinois.
It grows best in forests of maple, birch, beech and oak amid thick layers of dead leaves.
Growing up to 14 inches tall, the pogonia has a hollow

Photographed by Devry Becker Jones (CC0), March 31, 2026
3. Nearby signage about the Dragonflies of Northern Virginia
This plant is considered rare in Virginia and is listed as Federally Threatened under the Endangered Species Act. The main threat is diminishing habitat as forests are lost to commercial and residential use. NOVA Parks' more than 12,000 acres are among the few locations in Virginia where the pogonia thrives.
[Captions:]
Dr. Ira Gabrielson, one of the founders of NOVA Parks and its first board chair, releases a duck in the Washington, DC area as part of a study on waterfowl migration. Gabrielson was chief of the Biological Survey and later director of the U.S. Fish and Wildlife Service. Source: Library of Congress.
A bald eagle is about to make a meal of a gizzard shad at Pohick Bay. Source: Matt Felperin.
Erected by NOVA Parks.
Topics and series. This historical marker is listed in these topic lists: Animals • Environment • Horticulture & Forestry • Parks & Recreational Areas. In addition, it is included in the NOVA Parks series list. A significant historical year for this entry is 1959.
Location. 38° 49.665′ N, 77° 7.399′ W. Marker is in Alexandria, Virginia. It is in Alexandria West. It is on Roanoke Avenue 0.2 miles east of Sheffield Court, on the left when traveling east. Touch for map. Marker is at or near this postal address: 5400 Roanoke Avenue, Alexandria VA 22311, United States of America. Touch for directions.
Regionally, this marker is in the Washington Metropolitan Area and in Northern Virginia. It is also in the American South, specifically in the Upper South, in the Mid-Atlantic, and on the Eastern Seaboard. Globally, it is in the North Atlantic Region, North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once the territory of the Mississippian Culture, one of the original Thirteen Colonies, one of the Confederate States of America, and the Antebellum South.
Other nearby markers. At least 8 other markers are within one mile of this marker, measured as the crow flies: A Legacy of Conservation (about 500 feet away, measured in a direct line); Cabin in Historic Fairfax County (approx. 0.4 miles away); An American Indian Camp in the Uplands (approx. 0.4 miles away); Dora Kelley Nature Park & Wildlife Sanctuary (approx. 0.4 miles away); a different marker also named Dora Kelley Nature Park & Wildlife Sanctuary (approx. half a mile away); Cloud's Mill Race (approx. 0.9 miles away); James Marx All Veterans Park (approx. one mile away); a different marker also named Southwest Bastion (approx. 1.1 miles away). Touch for a list and map of all markers in Alexandria.
Another marker is no longer nearby. Southwest Bastion (was approx. 1.1 miles away but has been permanently removed).
Credits. This page was last revised on March 31, 2026. It was originally submitted on March 31, 2026, by Devry Becker Jones of Washington, District of Columbia. This page has been viewed 10 times since then. Photos: 1, 2, 3. submitted on March 31, 2026, by Devry Becker Jones of Washington, District of Columbia.
