What it actually is
The bald eagle (Haliaeetus leucocephalus) is a sea eagle, not a true eagle in the Aquila sense, found only in North America. Females run bigger than males, up to 14 pounds against a male's 9, with a wingspan that stretches 6 to 7.5 feet tip to tip. It builds the largest nest of any bird on the continent: up to 4 to 5 feet across, reused and added to year after year until some have weighed close to a ton.
Not actually bald
“Bald” here comes from the old English “balde,” meaning white, not hairless. That white head and tail don't show up until a bird is 4 to 5 years old. Before that, juveniles are a mottled brown that regularly gets misidentified as a golden eagle, which is a genuinely different bird that keeps that brown coloring for life.
The comeback
This is the actual story worth knowing. The pesticide DDT thinned eggshells so badly that nests failed before hatching, and by 1963 there were only 417 known nesting pairs left in the entire lower 48 states. The bald eagle was listed under the Endangered Species Preservation Act in 1967, DDT was banned in the U.S. in 1972, and the recovery that followed is one of the actual success stories of American conservation: the species was delisted from the Endangered Species Act in 2007, and a 2021 U.S. Fish & Wildlife Service survey put the lower-48 population at more than 316,000 birds, over 71,000 of them nesting pairs. It's still protected under the Bald and Golden Eagle Protection Act and the Migratory Bird Treaty Act, so none of that is a green light to bother one.
Why it's around here
Bald eagles nest near large bodies of water with a steady fish supply and tall trees to build in, which describes this entire corridor. The Columbia River near Battle Ground and the Willamette River running through Springfield are both known habitat, and Ridgefield National Wildlife Refuge, a short drive from Battle Ground, is a genuinely good spot to see one, especially in the winter months when northern birds move down to join the residents.
The Ben Franklin myth
The popular version is that Franklin wanted the turkey as the national bird instead. That's not quite what happened. In a 1784 letter to his daughter, Franklin criticized the eagle chosen for the Society of the Cincinnati's emblem as being of “bad moral character” for stealing fish from ospreys, and said the turkey, by comparison, was “a much more respectable bird.” He never formally proposed the turkey as the national symbol, and the eagle had already been adopted for the Great Seal of the United States in 1782, two years before he wrote it.
Actually seeing one
Ridgefield National Wildlife Refuge runs a seasonal auto tour loop where wintering eagles are a regular sight from October through spring. Anywhere along the Columbia or Willamette with a clear sightline to the water and tall conifers nearby is worth a look, especially early morning. Bring binoculars; from the ground they're bigger, and further off, than people expect.
Sources & further reading
- Bald Eagle, Haliaeetus leucocephalus · U.S. Fish & Wildlife Service
- Bald Eagle · Audubon Field Guide
- Bald Eagle · Wikipedia
- Bald Eagle Population Size · U.S. Fish & Wildlife Service
- Ridgefield National Wildlife Refuge · U.S. Fish & Wildlife Service
- Bald Eagles and DDT · American Bald Eagle Foundation
- Benjamin Franklin, Letter to Sarah Bache, January 26, 1784 · Founders Online, National Archives
