Population History & Methods
In the early part of the twentieth century, bald eagles commonly nested along Georgia’s coast and in the Okefenokee Swamp. Occasionally, they nested elsewhere in the state, likely in major river swamps and depressional pond and wetland systems in the Coastal Plain. By the late 1950s, eagle numbers had declined, and the species was no longer considered common in Georgia. By 1970, there was only one known successful nest, and it was located on St. Catherines Island. A successful nest is a nest that has fledged at least one nestling (also called an “eaglet”). In the decade that followed, the bald eagle was described as a rare transient and winter resident. There were no known nests in Georgia.
As with eagle populations elsewhere, the high mortality rate and lack of successful reproduction that resulted in this decline were likely the result of habitat loss and environmental contamination by DDT and other toxic chemicals. DDT use was outlawed in the United States in 1972, and the federal Endangered Species Act (ESA) was passed in 1973. That same year, Georgia enacted the Endangered Wildlife Act, which allowed listing and protection of rare animal species. The bald eagle was added as an endangered species to Georgia’s Protected Wildlife List in 1974.
After several years with no known nesting activities, an occupied eagle nest was discovered on Georgia’s coast in 1978, and by 1981 there were two known occupied nests.
Georgia DNR started releasing young eagles in 1979. The birds were obtained from captive breeding facilities and wild nests in states where the birds were more numerous. Sapelo Island was the initial release site, and the program was later expanded to Butler Island (Altamaha Waterfowl Management Area) and Lake Allatoona. Eighty-nine eaglets were released via a “hacking program” through 1995, but it is not known if this was a significant factor in rebuilding the nesting population.
The nesting population of bald eagles in Georgia has continued to grow, surpassing 100 occupied nest territories in 2007 and more than 200 nest territories in 2015. The 2017 surveys documented a record 218 nests at least 142 of which were successful.
In 2018, DNR downsized surveys from statewide to covering about two-thirds of the state each year. The change maintained standardized monitoring, synced with the species’ range-wide comeback and mirrored slimmed-down surveys in some neighboring states. It also freed money for other needed conservation projects. Conserving bald eagles remains a priority. The species is state-listed as threatened and a species of conservation concern in the State Wildlife Action Plan. Survey leaders determined that halving the effort would not compromise DNR’s ability to identify and address decline in productivity—the most crucial consideration for the change.
Survey results in 2020 showed that eagle nesting remains strong in the state, but the number of successful nests and young fledged in the northern part of the state declined this year compared to long-term averages. Substantial rainfall from January through March likely contributed to lower nest productivity in north Georgia, survey leader Dr. Bob Sargent said.
Checking by helicopter in January, March and early April, Sargent counted 117 eagle nest territories in three regions of the state: the six coastal counties; a section of east Georgia bounded roughly by interstates 16 and 85 and the South Carolina line; and the counties north of Atlanta. This year’s survey results also included seven nests monitored in other areas by volunteers or DNR staff.
Considering that the rest of south Georgia, surveyed in alternate years, usually has about 85 occupied nest territories—or active nests—Sargent said the state likely had 200 or more eagle nests for the sixth straight year.
The 2020 survey results:
- Six coastal counties (including barrier islands): 71 occupied nest territories, with 54 fledging at least one eaglet (76 percent success rate; about average) and 83 young fledged (1.2 per occupied territory; average). New occupied nest territories this season: none.
- East Georgia (an area bounded roughly by interstates 16 and 85 and the South Carolina line): 24 occupied nest territories, with 16 fledging at least one eaglet (67 percent success rate; about 10 percent lower than average) and 22 young fledged (0.9 per occupied territory; lower than average). New occupied nest territories: five.
- North Georgia (north of Atlanta from Hall to Rabun counties, west across the Chattahoochee National Forest to Dade County and south to Floyd and Bartow counties): 15 occupied nest territories, with seven fledging at least one eaglet (47 percent success rate; about 30 percent lower than average) and 11 young fledged (0.7 per occupied territory; much lower than average). New occupied nest territories: four.
- Totals (including volunteer- and staff-monitored nests, plus a few nests east of Interstate 75): 117 occupied nest territories, with 82 fledging at least one eaglet (70 percent success rate; about 8 percent lower than average) and 126 young fledged (1.1 per occupied territory; slightly lower than average).
Bald eagles usually lay two eggs per nest, but occasionally they lay three. Annual nest success ranges between 65–80 percent.
This iconic species is known to nest in about 70 counties in the state. One-third of the nests are found in the six coastal counties, but territories are now found throughout much of the state where there is sufficient open water habitat and large trees for nesting, particularly along the lower Chattahoochee and Flint River corridors.
Most nests are isolated from human structures and human disturbance, but a few eagle pairs have chosen to build nests in trees located a short distance from houses and highways. About 95 percent of nests are built in living, mature pine trees. To date, no bald eagle nests in Georgia have been found on man-made structures, but the similar-looking osprey routinely nests on bridges, poles, navigational markers, platforms, and cell phone towers.
Bald eagle nests are monitored in January to determine occupancy, and again in March or April to determine productivity. Most nests are monitored via helicopter surveys, but a few are monitored from the ground, often with the aid of volunteers. Additional nests are discovered each year through limited aerial searches and through reports from the public. By late winter most nests are home to young eaglets ranging in age from 4–14 weeks, or they are empty because the nesting effort failed or, in a few instances, the eaglets have fledged.
There is a marked latitudinal gradient with regards to the timing of the nest cycle in Georgia. Eagles on the coast nest earlier and fledge young earlier than those in the mid-state, and much earlier than those nesting on the perimeter of reservoirs in the mountains.
The causes of failure for eagle nests are varied as they are with all birds, including severe weather, death of one or more of the parents, insufficient food available (they mostly eat fish) to rear young, and predation of eggs and young by raccoons, great horned owls, and other wildlife. Monitoring also helps DNR to identify potential threats to eagle nests, as well as management needs. Resolution of habitat management conflicts on private property is a top priority. Recommendations based upon the federal management guidelines are adapted as suitable at each nest site to prevent harassment of the eagles that could lead to nest abandonment or nest failure, while also minimizing landowner restrictions.
The U.S. Fish and Wildlife Service downlisted the bald eagle to threatened in 1995, and in 1999 proposed that it be taken off the Endangered Species List. In 2007, the bald eagle was removed from the federal list of threatened and endangered species. The species is still listed as threatened under Georgia's Endangered Wildlife Act, and is protected at the federal level under the Bald and Golden Eagle Protection Act and the Migratory Bird Treaty Act.
DNR does not have a good estimate of Georgia's actual eagle population, which tends to increase during the late fall and winter months with the arrival of wintering eagles from the northern U.S. Protections afforded to the bald eagle under the Endangered Species Act have been largely responsible for its inspiring recovery in Georgia. However, there continue to be reasons for concern.
Avian Vacuolar Myelinopathy (AVM), a disease of the central nervous system, has resulted in the deaths of eagles and abandonment of nest territories at Lake Juliette and the lower part of Clarks Hill Lake in recent years, and could have a devastating impact if it spreads to other sites. Research has determined that a toxin found in certain species of photosynthetic bacteria (a “cyanobacteria”) causes the disease. This cyanobacteria has been found growing on hydrilla, an invasive species of submerged aquatic plant. American coots, which winter in large numbers in Georgia on reservoirs, forage on hydrilla, thereby ingesting the toxin in the cyanobacteria. The resulting symptoms include lack of coordination and an inability to fly, making these birds easy prey for eagles, which, in turn, ingest the toxin. To-date this problem has remained fairly localized.
There are unfortunate downsides that come with an increased eagle population such as more birds being hit by cars as the eagles, mostly sub-adults, eat roadkill, incidents of eagles being shot, birds dying from consuming rodents killed by the ingestion of rodenticides, occasional electrocutions, incidents of eagles being seriously injured in territorial conflicts with other eagles, and birds dying from lead poisoning when they scavenge carcasses of deer containing bullets.
For more information on bald eagles in Georgia, contact the Forsyth office of WRD's Wildlife Conservation Section, 478-994-1438.
Report Nesting Bald Eagles
The Department of Natural Resources monitors all known bald eagle nests annually and works with landowners to help protect these sites from disturbance. Georgia's nesting eagle population has been increasing and new nesting territories are established each year. Bald eagles return to their nesting territories in early fall and usually lay eggs between December and February. Nesting efforts on the coast may begin and finish as much as two months earlier than those associated with reservoirs in the Georgia mountains. The eggs hatch about 35 days after being laid and the young leave the nest 11–14 weeks later, typically from late March to early May but occasionally in June.
Nests of the osprey (another fish-eating bird of prey), as well as the species itself, are often confused with those of bald eagles. Like the latter species, ospreys often reuse the same nest year-after-year, and so their nests can become massive. However, ospreys routinely nest at the very tops of trees, often snags (dead trees), as well as on a variety of man-made structures such as navigational signs, cell and electrical towers, and wooden platforms. Eagle nests in Georgia have not yet been recorded on these structures, and only about 10 percent of the time are they found in dead trees.
Most eagle nests are located just below the very upper canopy of trees, though there are exceptions to this rule. Interestingly, there are records of bald eagle nests that exceeded 15 feet in height and weighed over 2,000 pounds. In some instances eagle nests have remained in use for over 30 years, though in most cases they will use their nests for several years and then build and use an alternate nest nearby. Osprey nesting starts later (in March and April) than that of bald eagles and ends later (late June to early August) in the year than that of eagles.
Both species have white heads, but ospreys feature a dark line through the eyes, have a white underside, and the top of their tails is brown. Adult eagles are brown with white heads and tails, and are much larger than ospreys. In flight, eagles tend to hold their wings flat and straight, whereas the wings of ospreys tend to be angled and bowed down.
Georgia Wildlife Resources Division
Wildlife Conservation Section
116 Rum Creek Drive
Forsyth, GA 31029
National Bald Eagle Management Guidelines
In conjunction with the federal delisting of the bald eagle, the U.S. Fish and Wildlife Service released federal guidelines for the use of land owners, land managers, developers, and other interested parties, which are designed to minimize the possibility that human activities might disturb eagles or interfere with or cause their nesting efforts to fail. These guidelines define inner and outer buffer zones centered on eagle nest trees, and provide recommendations concerning types of activities such as tree clearing, road and building construction, prescribed burning, and ATV operations that can or cannot safely be conducted within these buffer zones during the nesting or non-nesting seasons. Note that in Georgia the nesting season for bald eagles typically spans late October/early November to mid-May, though this can vary by a few weeks depending on the location of the nesting birds in the state. If you have an eagle nest on your property and have concerns that a current or future activity may or may not be in compliance with these guidelines, contact Bob Sargent, email@example.com. View a copy of the federal guidelines.
Identifying & Aging Bald Eagles
Some people may be surprised to find that many bald eagles in Georgia do not have white heads and tails, nor do they have yellow bills and yellow irises. In fact, the species does not fully exhibit these diagnostic characteristics until it is four to five years old, which is when it achieves sexual maturity. Prior to age five bald eagles are usually referred to as sub-adults or immatures. First and second-year eagles have mostly brown heads and tails, dark gray bills, and brown irises. Notice the white “wing-pits” in the picture of the first-year bird below, as well as the white and brown mottling on the wing lining (this is the underside of the leading edge of the wings). The eagle’s bill and irises are dark. Some first-year eagles feature “dirty white” feathers on the inner portion of the tail. The second-year bird, which is shown perched in the photo below, features white mottling in the wing lining and wing-pits too, but also features extensive white mottling on the belly, scattered white feathers on the back and the inner portion of the tail feathers, a hint of white on the crown, tan-colored irises, the base of its bill is beginning to turn yellow, and, especially during the late spring and summer months, the feathers on the trailing edge of the wings form a ragged, uneven line because new (second year) flight feathers (shorter ones) are growing alongside older (first year) feathers (longer ones). The molt of flight feathers in bald eagles is a lengthy process, often taking at least five months to complete. The third-year bird features less white mottling on the wing linings, breast, and back, but shows much more white on the head and tail. There is often a dark line (stripe) through the eye and, although the white feathers in the tail still look “dirty,” they are more distinct and are bordered by a thin dark band at the tip of the tail. The bill and irises are almost completely yellow. The fourth-year bird looks like an adult except for a few scattered white feathers in the wing lining, a hint of a dark band at the tip of the tail, and a brown patch here and there on the head and tail.
Occasional sightings of golden eagles are reported from rural areas of Georgia. Generally, four to six observations are confirmed most years, almost always between the mid-fall and late winter months. Attempts were made by Georgia DNR in 1984–1993 to establish golden eagles in the Pigeon Mountain area via “hacking.” A pair attempted to nest in the area in 1992, and successful nesting by one pair was recorded in the mid-1990s. No golden eagle nests have been recorded in Georgia since then. Sightings of this species are usually confined to the remote forested and hilly terrain in the western and northwestern portion of the state, although it has also been observed hunting in large marshes on the coast, in the Okefenokee Swamp, and in marshes and forests of southwestern Georgia. Adult golden and bald eagles are easy to distinguish. Observers often confuse immature bald eagles for golden eagles. Look for the golden head and nape in golden eagles of all ages, and the bright white patches at the base of the flight feathers and the tail (bordered by a wide dark band) in first-year golden eagles. Some golden eagles show white patches in the underwing lining. In soaring flight, bald eagles hold their wings in a flat posture, whereas the wings of golden eagles are slightly pitched up (this is called “dihedral”).
|1st year (juvenile)||2nd year||3rd year||4th year||5+ years (mature)|
|Photo by Craig Koppie|
Where to Go to See Bald Eagles in Georgia
The easiest way to observe a bald eagle in Georgia during the nesting season is to visit the Berry College nest cam at: http://www.berry.edu/eaglecam/. Bald eagles, great horned owls, and ospreys have taken turns using the nest at The Landings on Skidaway Island during the winter and early spring, which you can view at: http://landingsbirdcam.com/ There are many other nest cams available online featuring bald eagles and other species nesting in other parts of the country. The best opportunity to see bald eagles in the wild in Georgia is to look for them on barrier islands and on large reservoirs and rivers during the winter months, because the state’s eagle population increases during this time of year due to an influx of wintering eagles from the North. Eagles are especially abundant on Lake Seminole, Lake Oconee, Allatoona Lake, West Point Lake, coastal areas in Chatham County, and on or near Sapelo and Cumberland Islands. If you find an active eagle nest, report its location to firstname.lastname@example.org Stay at least 330 feet away from an active eagle nest in compliance with federal guidelines. Getting closer not only violates these guidelines, it also could keep eagles from incubating their eggs or feeding their young, or it could cause eaglets to jump from the nest before they are ready to fledge.
What Does An Eagle Sound Like?
If you have ever watched an eagle flying on a movie or television screen, there is a good chance that the “eagle call” you heard on the sound track was actually the cry of a red-tailed hawk, which sounds like this (click on “adult scream”): https://www.allaboutbirds.org/guide/Red-tailed_Hawk/sounds
The bald eagle sounds like this (click on “chatter call”): https://www.allaboutbirds.org/guide/Bald_Eagle/sounds