What’s the World’s Next Great Comeback Story?

Conservancy Scientists Rank Nature’s Greatest Past and Future Comebacks

BRUNSWICK, ME | October 28, 2011

Decades ago, few would have predicted that bald eagles and osprey would be a common sight over the Kennebec and Penobscot rivers in the 21st Century. But as The Nature Conservancy celebrates its 60th anniversary, raptors are among the great success stories of modern conservation.

Here in Maine, our once-industrial rivers again support spring fish runs and summer paddlers. Our forests have rebounded to cover an acreage that hasn’t been seen in generations, from coastal pine barrens to the North Woods. And forest species like beaver and wild turkey and have rebounded in response to a changing forest.

“These comeback stories are really inspiring,” said Mike Tetreault, executive director of The Nature Conservancy in Maine. “It’s amazing how resilient nature can be with a little help from conservationists.”

5. Georges Bank haddock: Long a traditional species for New England fishermen, haddock are among the Northwest Atlantic’s great comeback stories. Driven to near collapse in the early-1990’s, the spawning population of haddock has seen a ten-fold increase in the past two decades, thanks in large part to conservation measures adopted by regional managers and fishermen. The recovery of the haddock population has directly benefitted U.S. and Canadian fishermen, with landings increasing from about 2,400 metric tons in 1995 to over 21,000 metric tons in 2005. Stewardship of the haddock resource through sustainable fishing practices will help ensure a robust population and continued economic opportunities in the future.

4. Wild turkey: This native forest bird had disappeared from Maine by the 1800s, but since reintroductions and habitat improvements began in 1942, the population has grown to more than 25,000, according to the National Wild Turkey Federation.

3. Alewife: This spring more than a million river herring migrated up the Kennebec River, more than a decade following the removal of the Edwards Dam. Decades of water quality improvements set the stage, and efforts to restore fish passage. Now, conservationists are anticipating a similar recovery following the completion of the Penobscot River Restoration Project in the coming years.

2. Forests: Maine is more forested today than it was a century ago, and nearly as forested as it was in the 17th Century. Nearly 90 percent of Maine’s land is now forested. New England’s forests are quite young, on average, and the recent State of Nature report reveals that they’re bisected by hundreds of miles of roads, but they’ve made an amazing recovery. And with working forest easements and responsible harvests, they’ll meet the needs of people and wildlife for centuries more.

1. Bald eagles: A common sight in the Debsconeag Lakes Wilderness Area, Acadia National Park and even in some of Maine’s biggest cities, bald eagles, osprey and peregrine falcons made an amazing comeback after DDT, a pesticide that caused their eggs to develop thin shells, was banned in 1972. More than 400 breeding pairs of bald eagles now live in Maine, according to state biologists, up from perhaps 30 in the early 1960s.

Someday, we’ll be talking about stories like the miraculous return of salmon to American rivers, the restoration of floodplain ecosystems and the amazing recovery of the Yunnan golden monkey in the forests of China, which Sanjayan and other Conservancy scientists predict will be the next great comebacks.

“Nature is resilient,” said M. Sanjayan lead scientist for The Nature Conservancy. “With a little help, animals, landscapes and even the air that we breathe can come back from the brink of disaster. These amazing comeback stories give me hope for the future of our world.”

Salmon species native to both the Atlantic and Pacific have been pushed to the brink, struggling to battle dammed and polluted rivers, a warming climate and fishing pressure at sea. But there are signs of progress: In Maine, migratory runs of federally protected Atlantic salmon runs reached record numbers this fall and dam removals will restore key habitat. And on the West Coast, where salmon are critical to the entire Pacific Coast ecosystem, the Conservancy is involved in more than 50 restoration projects across five states and Canada, including an innovate project to restore habitat for coho salmon in California that’s already showing results.

Much floodplain land in the United States has been lost to farming or development, but reconnecting floodplains with their rivers can be an effective and low-cost way to reduce flooding and protect habitat. We’re working to restore elms along the Connecticut River, and studying past Mississippi River floods to better understand river behavior.

China’s Yunnan golden monkey is one of the world’s most endangered primates, with no more than 2,000 remaining. Habitat loss and illegal hunting have pushed the monkey to the brink of disaster. But with the help of local people and Conservancy biologist Long Yongcheng who is tracking the elusive creatures the monkey is making progress.

Several Maine species and landscapes were also featured in the national nature’s comebacks list released by Nature Conservancy scientists this week:

Nature’s Top 10 Greatest Comebacks of the 20th Century

Bald Eagle: The national symbol of the United States is also a sign of survival. In the mid-20th Century, eagles were driven to the edge of extinction due to hunting, habitat loss and pesticide contamination that harmed their ability to hatch chicks. Eagle populations began to rebound after the pesticide DDT was banned in the United States in 1972. Today, there are an estimated 10,000 nesting pairs in the United States.

Eastern Forests of the United States: Large swaths of the eastern United States are more forested today than they were in the 1800s. It’s estimated that less than 48 percent of the maple, oak, cedar, pine, hemlock and more that once stretched from Maine to Florida and east to Texas and the Great Lakes was gone by 1900. The 1911 Weeks Act created 48 national forests, protecting 20 million acres, and in recent decades working forest conservation easements have helped keep millions of additional acres of private land forested.

Clean Air: Depending on where in the United States you live, your intake might be fresher than others. But it’s probably far better than it could have been, thanks to the 1970 Clean Air Act. Air pollution has always been an issue and probably always will be, as long as humans are driving, flying, farming and manufacturing. But with the passage of the Clean Air Act, the quality of the air we breathe became a right that must be protected.

Mauritius Kestrel: The story of the Mauritius Kestrel is probably the most remarkable conservation success story you’ve never heard. In 1974, this small bird of prey that lives on an island off the coast of Africa was considered the rarest bird in the world – there were just four of them. But two conservationists established a wildlife sanctuary, and their captive breeding program helped the kestrel population recover. By the mid-1990s there was a self-sustaining population, and today there are more than 800 mature birds.

Cuyahoga River Valley & Lake Erie: Following decades of industrial pollution, the Cuyahoga River Valley and Lake Erie were once devoid of most aquatic life. In the 1950s and 60s, the river actually caught fire several times and TIME magazine dubbed it “the river that oozes rather than flows”. But these systems have been brought back to life, fisheries are rebounding and Ohioans are again enjoying the river, thanks in large part to the Clean Water Act.

Gray Whale: The International Whaling Commission’s moratorium on commercial whaling may have saved gray whales from extinction. Gray whales make one of the longest migrations of any animal — more than 12,000 miles from their winter breeding grounds in Baja, Calif., to their summer feeding grounds near Alaska. In the 19th Century, gray whales were hunted to near extinction. Since then, gray whale numbers have rebounded to an estimated 22,000 animals.

Gray Wolf: Top predators in many parts of the world, little threatens a wolf. But as agriculture expanded across the Midwest in the 20th century, thousands of wolves were killed for being a threat to livestock, as much of their habitat became farms and towns. Following their listing on the Endangered Species List in 1974, wolf populations began to bounce back in the Great Lakes region. Today there are estimated to be more than 4,000 wolves.

Santa Cruz Island Fox: Until the 1990s, the tiny, 4-pound Santa Cruz Island fox ruled the small island off the coast of California. Then came the pigs. The feral pigs attracted golden eagles, who also snacked on the foxes. By 2002, fewer than 100 remained − until The Nature Conservancy, together with the National Park Service, U.S. Fish and Wildlife Service and the California Department of Fish and Game, initiated a captive breeding program. Today, the population is up to 1,300.

Grizzly Bear: The story of grizzly bears in the western United States is one of cautious optimism. Like many species, hunting and habitat loss took a toll as settlers moved West. By 1970, their numbers were low enough to earn them threatened status in the lower 48 states. Now their numbers are up to 600 near Yellowstone National Park and they just might be taken off the threatened list.

Southern White Rhino: Near the verge of extinction in the 1800s, the southern white rhino is now considered the most abundant rhino in the world. Their story is much like that of the American bison. They once grazed huge swaths of grassland, but were decimated by widespread hunting. By the late 1800s, the southern white rhino was on the verge of extinction. Today, thanks to decades of work by conservationists and researchers, their numbers are above 20,000.

For more information and a slideshow of the greatest comeback stories visit

The Nature Conservancy is a leading conservation organization working around the world to protect ecologically important lands and waters for nature and people. The Conservancy and its more than 1 million members have protected nearly 120 million acres worldwide. Visit The Nature Conservancy on the Web at

Contact information

Misty Edgecomb
Senior Media Relations Manager

Related Links

We’re Accountable

The Nature Conservancy makes careful use of your support.

More Ratings