Peregrine Falcons at Harpers Ferry

three images: gravel on a ledge; female peregrine falcon on a rock; view from rock ledge of Harpers Ferry
L to R: native shale gravel added to improve drainage at one of the nesting sites; female peregrine falcon perched on Maryland Heights cliff face; bird's eye view of Harpers Ferry from one of the peregrine falcon nesting sites.

NPS Photos

 

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Peregrine Falcon StoryMap

 
 

Why are we concerned about Peregrine Falcons?

Historically, the use of DDT (Dichloro-diphenyl-trichloroethane) as a pesticide resulted in a rapid decline in the population. DDT caused eggshell thinning, resulting in the eggshell breaking while being incubated. This resulted in the near extinction of the species. Since the ban of DDT in the 1970s, peregrine falcon populations have recovered significantly and are showing signs of recovery where they haven’t been spotted for decades, such as Maryland Heights at Harpers Ferry.

Peregrine falcons are considered rare in Maryland and West Virginia and threatened in Virginia. The species is protected under the Migratory Bird Treaty Act.
 
two images: ecologist rappelling to a peregrine falcon nesting site; ecologist inspecting nesting site
L to R: Alan Williams, Shenandoah National Park ecologist, rappelling to one of the peregrine falcon nesting sites; Williams inspecting a nesting site.

NPS Photos

What is the NPS doing?

Staff at Harpers Ferry National Historical Park have been working with the U.S. Fish and Wildlife Service and other subject matter experts and volunteers to help protect and re-introduce peregrine falcons back to the area for over a decade. In the past, several pairs of peregrine falcons have utilized the cliffs but did not successfully produce a viable clutch or successful fledgling until 2021.

In February 2017 a team of Natural Resource professionals from Shenandoah National Park worked with protection rangers and resource staff at Harpers Ferry to perform a nest site inspection at two locations on the cliffs of Maryland Heights. The inspection involved an Ecologist from Shenandoah National Park, Alan Williams, rappelling to the observed nesting sites, assessing the conditions and ultimately, adding native stones and gravel to improve site conditions and drainage. Site condition could have been one reason why the peregrine falcons did not successfully produce offspring prior to 2021.

Harpers Ferry NHP issues a seasonal, temporary cliff closure to protect peregrine falcons in years when the birds are present in the park. The closure is in place because peregrine falcons are a sensitive species on several levels. Human interference, especially during the nesting phase, can drive the mature falcons off, abandoning eggs and fledglings that would be left to die. Specific cliff areas are closed and a portion of the areas above the cliffs are closed. The closure is marked with signs and fencing. Please respect this closure to give the peregrine falcons a safe habitat to breed and nest.
 
peregrine falcon in flight
Peregrine falcon in flight in the skies above Harpers Ferry NHP

NPS Photo/Volunteer Joe Kelly

2021 Success

For the first time in almost 70 years, a peregrine falcon chick hatched and fledged (developed feathers that enabled it to fly) at Harpers Ferry National Historical Park. It was one of three hatchlings, but the only chick to make it through the vulnerable newborn phase and successfully fledge. Learn more about this historic event.

The park is recruiting volunteers to assist with monitoring of the peregrines and education the public about the species. If you are interested in volunteering with this effort, please email us.

We encourage park visitors to look for the peregrine falcons as they soar and hunt overhead. Share your photos of the peregrine falcons with us by tagging the park's social media channels @harpersferrynps and using the hashtags #HFfalcons or #HarpersFerryFalcons.
 

2022 Seasonal Closures at Maryland Heights

From Feb. 16 to July 29, 2022, portions of Maryland Heights, including several climbing areas and rock outcroppings near the overlook, will be closed to protect nesting peregrine falcons. Learn more.

 
Map of climbing area closures to protect nesting peregrine falcons
2022 climbing area closures to protect nesting peregrine falcons

NPS

 

2022: Second Consecutive Successful Year

For the second consecutive year, peregrine falcon chicks successfully fledged. Out of four hatchlings, three chicks survived the vulnerable nestling phase and have entered the fledging phase after they developed feathers enabling them to fly. Learn more about this event and the program that supports it.

 
Three peregrine falcon fledglings on rocks
Three peregrine falcon chicks successfully fledged in 2022.

NPS/Kelley.

 

FAQs

A: Maryland Heights is the last known historic nesting site in Maryland to have a productive peregrine eyrie (nest) prior to the decline of the species.

Although no longer an endangered species, peregrine falcons are considered rare in Maryland and West Virginia and threatened in Virginia, and the species is protected under the Migratory Birds Act.

Following best practices in conservation, the National Park Service’s goal is to support the peregrines in reestablishing eyries on the Maryland Heights cliffs.
A: In 2021, the closures are from February 25 to July 31.
A: Yes, trails are open and the overlook is open on Maryland Heights. Several rock outcroppings are closed near the overlook to give the peregrine falcons adequate space for nesting.
A: The Union Walls climbing area is open. All bouldering sites remain open on Maryland Heights.
A: The Point in Harpers Ferry is a great place to observe the peregrine falcons. Peregrines are fast fliers and are about the size of a crow, so we suggest bringing binoculars or a spotting scope for the best viewing experience.
A: To report disturbances, please contact the National Park Service at 866-677-6677 or e-mail us.
A: For general information about peregrines and other birds, check out Cornell University’s All About Birds website (allaboutbirds.org).
A: There are over 120 species of birds that breed, nest, or migrate within Harpers Ferry NHP. To learn more about these birds, check out our Birds web page at go.nps.gov/HFbirds.
 

Peregrine Falcon Facts

 
 
female peregrine falcon with a cliff face behind it
Female peregrine falcon at Harpers Ferry NHP

NPS Photo

Last updated: June 21, 2022

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Contact Info

Mailing Address:

Harpers Ferry National Historical Park
National Park Service
PO Box 65

Harpers Ferry , WV 25425

Phone:

304 535-6029

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