President John F. Kennedy later wrote: "The Founding Fathers made an appropriate choice when they selected the Bald Eagle as the emblem of the nation. The fierce beauty and proud independence of this great bird aptly symbolizes the strength and freedom of America."
Although they primarily eat fish and carrion, bald eagles used to be considered marauders that preyed on chickens and domestic livestock. Consequently, the large raptors were shot in an effort to eliminate a perceived threat. Coupled with the loss of nesting habitat, bald eagle populations declined.
Shortly after World War II, DDT was hailed as a new pesticide to control mosquitoes and other insects. However, DDT and its residues washed into nearby waterways, where aquatic plants and fish absorbed it. Bald eagles, in turn, were poisoned with DDT when they ate the contaminated fish. The chemical interfered with the ability of the birds to produce strong eggshells. As a result, their eggs had shells so thin that they often broke during incubation or otherwise failed to hatch. DDT also affected other species such as peregrine falcons and brown pelicans.
By 1963, with only 487 nesting pairs of bald eagles remaining, the species was in danger of extinction. In addition to the adverse effects of DDT, some bald eagles have died from lead poisoning after feeding on waterfowl containing lead shot, either as a result of hunting or from inadvertent ingestion.
Today, there are almost 10,000 nesting pairs of bald eagles in the contiguous United States. Bald eagles have staged a remarkable population rebound and have recovered to the point that they no longer need the protection of the Endangered Species Act.
For more information about Bald Eagles, visit All About Birds- the Cornell Lab of Ornithology online bird guide.
Bald Eagle Information http://t.co/o4ugzs2
Nesting Eagles http://t.co/vpj99ZV
Terrified Geese Have Eyes on the Sky http://t.co/pqsWQqE
Amazing moment bald eagle chases down and catches a starling in mid-air http://t.co/U3CT5Sh
Michigan DNRE asking drivers to watch out for bald eagles http://t.co/A9R33zI