February 07, 2017
Restoration Spotlight: A forest's hopes rest on golden wings
When Mike and Laura Jackson wanted to restore wildlife habitat on their slice of a forested Pennsylvania mountainside, they did something you might not expect. The husband and wife, who live on 114 acres in Bedford County, started cutting down trees.
The Jacksons were motivated to drastic action in part by a small gray bird with flashes of yellow on its head and wings.
“We’ve always been birders, so we keep track of what we see,” Laura said, while she and Mike followed the trails that wind through their land. “And we’ve had golden-winged warblers on our property—but the last one we saw or heard was in 2009.”
A golden-winged warbler is photographed in Bald Eagle State Park in Centre County, Pennsylvania. The species’ population has declined by two-thirds due to loss of habitat and competition with the closely related blue-winged warbler. (Photo courtesy Mike and Laura Jackson)
The golden-winged warbler is a migratory bird that breeds in the Upper Midwest and Appalachian Mountains and winters in Central America. Its population has declined by roughly two-thirds in the past 50 years, in pace with the decline of the early successional habitat it needs—a young forest.
After becoming Pennsylvania Forest Stewards through a program at Penn State University in 2000, Mike and Laura began to recognize why the forest on their own land wasn’t healthy.
“That really opened our eyes to forest management—things that we could do to help the property because we saw that we were getting invasive species,” Laura said.
Mike and Laura Jackson stand on their 114-acre property in Bedford County, Penn., on Nov. 9, 2016.
The Jacksons worked with a service forester from the Pennsylvania Department of Conservation and Natural Resources (DCNR) in 2002 to develop a ten-year forest stewardship plan for their property. Their goals were to improve forest health, control invasive species, increase native plant diversity and manage for wildlife.
Meanwhile, the golden-winged warbler was listed as “near threatened” by the International Union for Conservation of Nature (IUCN) in 2004.
Though Laura was still teaching, Mike took advantage of his retirement to implement what they were learning at the many classes and workshops they were attending. He built trails and wildlife amenities such as brush piles, bird houses, squirrel boxes and owl boxes. He removed invasive species like multiflora rose and Japanese barberry, and he planted native shrubs, trees and wildflowers. He applied a technique called crown release, which thins out vegetation to give valuable wildlife trees like wild cherry, oak and hickory more sunlight and room to grow.
“Then, in 2010 we donated an easement to Western Pennsylvania Conservancy so the land can’t be developed,” Laura said. “They don’t accept just any property but they liked our property because of its good wildlife value—we have a lot of box turtles on it, a lot of birds.”
The Jacksons’ property is part of a larger area of forest that includes Tussey Mountain and state game lands. “We’re not just an isolated pocket of woods surrounded by farm fields,” Laura said.
Laura said it also helped that the land is part of a roughly 9,000-acre stretch of forest that includes Pennsylvania state game lands and Tussey Mountain.
“Even though [golden-winged warblers] nest in very young forest, they take their young after they’ve fledged, and they spend time in mature forest feeding and trying to teach them what to do as survival techniques.” Laura said.
In late 2011, the Jacksons attended a workshop for land managers to learn about best management practices for the golden-winged warbler. They were the only private landowners at the meeting.
“And we thought, ‘Wow, if we can work with people who know what they’re doing and who will try to help us with our invasive species control, we could get a healthy forest again,’” Laura said.
“Which meant cutting some trees,” Mike added.
A few months later, the Jacksons invited experts from the Pennsylvania Game Commission, Western Pennsylvania Conservancy, DCNR and Indiana University of Pennsylvania (IUP) Research Institute to look at their land. They determined it was a good fit for a golden-winged warbler habitat restoration project.
With support from the Game Commission, a forester returned to mark which trees to keep inside a 27-acre area, then invasive plants were treated with herbicide on all 108 acres of the Jacksons’ forest.
Mike and Laura interviewed a number of loggers before settling on a company that uses low-impact methods to remove trees.
A machine called a timco is used by Clark Brothers Logging to hold a tree in place while cutting inside the Jacksons’ 27-acre habitat restoration area. The Jacksons chose the company based on their low-impact methods and their willingness to take low-quality pulp wood in addition to more valuable trees. (Photo courtesy Mike and Laura Jackson)
The cut unveiled at least one surprise on the Jacksons’ property.
“We discovered that once we got rid of some of the trees, there are a couple spring seeps,” Laura said. “So we have a nice little wetland to walk through that we could never see before.”
Mike and Laura Jackson have kept track of roughly 150 box turtles living on their property, using a method of shell notching they learned at nearby Juniata College. (Photo courtesy Mike and Laura Jackson)
Funding for the logging came from the Environmental Quality Incentives Program (EQIP) through the Natural Resources Conservation Service (NRCS) Working Lands for Wildlife program. NRCS also paid for a fence around the restoration to keep out deer, allowing new plants to flourish.
“I was just surprised it came so fast,” Mike said.
Where the Jacksons had battled invasives for years, Mike said they are mostly gone.
“So as we walk through the area we’re looking for invasive species that still need to be maintained,” Laura said. “And we’re looking at this thick underbrush—and that’s what golden-winged warblers need.”
Monitoring for the project began the year following the cut, looking for regeneration as well as the golden-winged warbler.
Mike Jackson stands in the golden-winged warbler project area in Aug. 2016, two years after it was cut to promote regeneration. (Photo courtesy Mike and Laura Jackson)
“We’ve done [the monitoring] now two times after the logging, and we still have not seen or heard any golden-winged warblers,” Laura said. “But that’s not unexpected because there’s still a lot of regeneration yet to go and they need really thick, really heavy vegetation on the ground, and we just don’t have that yet.”
The Jacksons are prepared to wait, and said it might be another three years before the golden-winged warbler returns to their property. Through surveys they do for the Game Commission, they know that there is an active golden-winged warbler breeding site eight miles away, which puts them in the vicinity, even if it is still pretty far away.
“But what was neat was the very first spring when we were monitoring, we heard cerulean warblers,” Laura said. “And cerulean warblers are also a species of concern.”
Other at-risk birds in the project area include hooded warblers, Kentucky warblers and wood thrush. Monitoring overseen by IUP Research Institute has also identified six bird species present in the project area that benefit from young forest, including ovenbirds, chestnut-sided warblers, common yellowthroats, red-eyed vireos, indigo buntings and eastern towhees.
The Jackson’s great-niece and great-nephews cross a bridge built by Mike Jackson through wetlands inside their two-acre woodcock regeneration area. The American woodcock is another young forest species that used to nest on the Jacksons property that they hope will return. (Photo courtesy Mike and Laura Jackson)
For their years of effort to restore wildlife habitat in their forest, Mike and Laura were honored as Exemplary Forest Stewards by the Alliance for the Chesapeake Bay at the 2016 Chesapeake Watershed Forum in Shepherdstown, West Virginia, last fall. Nowadays, Mike and Laura also host several tours a year and enjoy answering visitors’ questions about their property.
The Jacksons’ land shows that dealing with nature can be counter-intuitive, that intervening can sometimes help it rebound.
“It’s nice to see people who might think that logging is bad and really a detriment to the woods.” Laura said. “[We can] turn their thinking around a little bit and help them realize that we did something that...even if we don’t get golden-winged warblers, we’ve done something to create a healthy forest. And that’s really the important thing.”
To view more photos, visit the Chesapeake Bay Program Flickr page