Denali National Park & Preserve
Golden Eagle
Denali National Park and Preserve is home to an estimated 125 pairs of one of the world's largest avian predators: the majestic golden eagle. Adult golden eagles have plumage that's predominately dark brown. The tips of the tail feathers are very dark and form a band at the end of the tail. The hackles (feathers on the back of the neck and head) range in color from deep gold to pale blonde and are the reason these are called golden eagles.
In the park, golden eagles prey primarily on ptarmigan, snowshoe hare, arctic ground squirrel, hoary marmot and carrion. Additional prey includes pine martin, porcupine, Dall sheep lambs, caribou calves, red fox, beaver, muskrat, smaller mammals (such as voles) and a variety of other birds. Golden eagles rarely eat fish. These majestic birds usually build their nests on cliffs or rock outcroppings, although a few nests are in trees just north of the park. The nests can be as large as five feet square or as small as 1.5 feet wide; they typically consist of sticks lined with grasses, lichen and feathers. It is interesting to note that most eagle nests are decades——and sometimes centuries——old, and are repaired and reused through the years.
Eaglets take their first flight about 70 days after they hatch (usually the hatching phase takes place in early August). That means fledglings make their first southern migration in late September, leaving Denali to soar off independent of their parents and their siblings. Most juvenile golden eagles from the park complete their first migratory journey south in about six weeks. Golden eagles from Denali National Park and Preserve spend the winter as far east as Kansas and South Dakota, as far south as northern Mexico, and as far west as central Washington.
Only 10 to 15 percent of the eaglets that leave nests in Denali will live to reach sexual maturity at about five years of age. Most will die of starvation, disease, predation and electrocution. Unfortunately, deaths occasionally occur because of illegal shooting. Golden eagles that survive their younger life phase can live 25 to 35 years in the wild. As with so many species, the future of the golden eagle and many other migratory birds depends on our ability to conserve important breeding, migratory and wintering habitats and the resources within these areas.
Denali In Depth
News from the Parks
Rainier Landmark Meets Wrecking Ball
November 18, 2008 - 11:29am
Paradise echoed Monday not with the voices of park visitors, but with the thump and crash of a 4,500-pound wrecking ball smashing through the old visitor center.
November 18, 2008 - 11:29am
Paradise echoed Monday not with the voices of park visitors, but with the thump and crash of a 4,500-pound wrecking ball smashing through the old visitor center.
New River Gorge National River Celebrates 30th Anniversary
November 18, 2008 - 11:24am
The New River Gorge celebrated its 30th year as part of the National Park System last week with the Nov. 10 anniversary of its 1978 designation as a National River.
November 18, 2008 - 11:24am
The New River Gorge celebrated its 30th year as part of the National Park System last week with the Nov. 10 anniversary of its 1978 designation as a National River.
Park to Go with 720 Sleds per Day
November 18, 2008 - 11:22am
Yellowstone National Park officials have opted to allow 720 snowmobiles a day in the park this winter, abandoning a temporary plan they proposed two weeks ago for 318 machines a day.
November 18, 2008 - 11:22am
Yellowstone National Park officials have opted to allow 720 snowmobiles a day in the park this winter, abandoning a temporary plan they proposed two weeks ago for 318 machines a day.
Falling Boulders Endanger Lives at Yosemite
November 18, 2008 - 11:20am
A major rockslide at Yosemite National Park's Curry Village has prompted officials to consider closing part of the lodging area permanently.
November 18, 2008 - 11:20am
A major rockslide at Yosemite National Park's Curry Village has prompted officials to consider closing part of the lodging area permanently.
Interior and Energy Team-up to Make National Parks “Green”
November 18, 2008 - 10:09am
The U.S. Department of the Interior (DOI) and the U.S. Department of Energy (DOE) signed a Memorandum of Understanding that will help the National Park Service (NPS) showcase sustainable energy practices and fulfill its mission of environmental stewardship. With equal amounts of initial “seed money” from DOI and DOE totaling $1 million for 2009, the Energy SmartPARKS program hopes to eventually draw private sector support to spark a green energy future in the United States. “This partnership will deploy energy efficient and renewable energy technologies throughout the national park system,” said Secretary of the Interior Dirk Kempthorne. “We have the power to not only improve conditions in the parks, but also demonstrate for the public the impacts and benefits of green energy innovations.” “Our national parks are a showcase of this country's natural beauty and historical significance. With this agreement, we're ensuring that these parks are also models of energy efficiency and clean energy technologies,” said Secretary of Energy Samuel Bodman. “Our parks have always been an important way for Americans to learn about the environment, now they can learn about energy use as well.” “The Energy SmartPARKS program will make positive, tangible advancements by greening the parks and by reducing energy costs and carbon emissions,” said Mary A. Bomar, Director of the National Park Service. “This is a great way to demonstrate our environmental leadership as we approach the 100th anniversary of the National Park Service in 2016.” On the ground, parks will use funding from Energy SmartPARKS to deploy cutting-edge technology as well as traditional solutions, including projects that retrofit lighting systems; purchase electric utility vehicles; install solar panel systems; upgrade meters and thermostats; replace windows and furnaces; study the feasibility of wind power; and conduct energy audits. Lessons learned from these projects can be used in other national parks and in the homes of every American. A list of some of the 2009 projects is available. Two recent projects illustrate the exciting possibilities of Energy SmartPARKS in the future: the exterior relighting of both the White House and the Washington Monument. With ground-breaking technology that improved the exterior illumination, these national icons now look beautiful while being energy efficient at the same time. Although the official assessment of the White House relighting project by DOE has not yet been conducted, early estimates anticipate over 50% energy reduction. The Washington Monument relighting project resulted in a 27% energy reduction with a cut of 36 tons per year in carbon emissions according to the official DOE assessment. The Energy SmartPARKS program will also develop new and expand existing partnerships with the private, non-profit, and academic sectors. These partners may help raise funds, identify projects, find technological solutions, and educate the public. The National Park Service is developing an Energy SmartPARKS website, in partnership with DOI and DOE, to showcase its commitment to a green energy future in America. Visit www.nps.gov/energy in the coming weeks.
November 18, 2008 - 10:09am
The U.S. Department of the Interior (DOI) and the U.S. Department of Energy (DOE) signed a Memorandum of Understanding that will help the National Park Service (NPS) showcase sustainable energy practices and fulfill its mission of environmental stewardship. With equal amounts of initial “seed money” from DOI and DOE totaling $1 million for 2009, the Energy SmartPARKS program hopes to eventually draw private sector support to spark a green energy future in the United States. “This partnership will deploy energy efficient and renewable energy technologies throughout the national park system,” said Secretary of the Interior Dirk Kempthorne. “We have the power to not only improve conditions in the parks, but also demonstrate for the public the impacts and benefits of green energy innovations.” “Our national parks are a showcase of this country's natural beauty and historical significance. With this agreement, we're ensuring that these parks are also models of energy efficiency and clean energy technologies,” said Secretary of Energy Samuel Bodman. “Our parks have always been an important way for Americans to learn about the environment, now they can learn about energy use as well.” “The Energy SmartPARKS program will make positive, tangible advancements by greening the parks and by reducing energy costs and carbon emissions,” said Mary A. Bomar, Director of the National Park Service. “This is a great way to demonstrate our environmental leadership as we approach the 100th anniversary of the National Park Service in 2016.” On the ground, parks will use funding from Energy SmartPARKS to deploy cutting-edge technology as well as traditional solutions, including projects that retrofit lighting systems; purchase electric utility vehicles; install solar panel systems; upgrade meters and thermostats; replace windows and furnaces; study the feasibility of wind power; and conduct energy audits. Lessons learned from these projects can be used in other national parks and in the homes of every American. A list of some of the 2009 projects is available. Two recent projects illustrate the exciting possibilities of Energy SmartPARKS in the future: the exterior relighting of both the White House and the Washington Monument. With ground-breaking technology that improved the exterior illumination, these national icons now look beautiful while being energy efficient at the same time. Although the official assessment of the White House relighting project by DOE has not yet been conducted, early estimates anticipate over 50% energy reduction. The Washington Monument relighting project resulted in a 27% energy reduction with a cut of 36 tons per year in carbon emissions according to the official DOE assessment. The Energy SmartPARKS program will also develop new and expand existing partnerships with the private, non-profit, and academic sectors. These partners may help raise funds, identify projects, find technological solutions, and educate the public. The National Park Service is developing an Energy SmartPARKS website, in partnership with DOI and DOE, to showcase its commitment to a green energy future in America. Visit www.nps.gov/energy in the coming weeks.
