How did bald eagles become endangered?

Answer 1

At one time the poison DDT was getting into the water, and fish that the eagles fed on passed the poison into the eagle's system. The eggshells were so thin that incubating eagles crushed them, and few young were being raised. The banning of DDT saw an increase in the eagle population, to where they are no longer considered endangered.

Answer 2

Bald eagles were officially declared an endangered species in 1967 in all areas of the United States south of the 40th parallel, under a law that preceded the Endangered Species Act of 1973. The Endangered Species Act was signed into law in 1973 by President Richard Nixon. This landmark legislation is regarded as one of the most comprehensive and important wildlife conservation laws in the world. Federal and state government agencies, along with private organizations, successfully sought to alert the public about the eagle's plight and to protect its habitat. On 4 July 1976, the US Fish and Wildlife Service officially listed the bald eagle as a national endangered species.

On 28 June 2007 the Interior Department took the American bald eagle off the endangered species list.

See the related link below.

Answer 3

Bald eagles have made a remarkable come back, and are no longer classified as an endangered species.
The Bald Eagle is listed as LC (Least Concern), meaning it is not at risk. It is not on the Endangered Species list. It was removed from the Threatened Species list in 2007.

Answer 4

It seems that they became endangered because the pesticide DDT caused them to have difficulties processing calcium, which led to thinned eggshells. Luckily, with the ban on DDT, bald eagles recovered and they are now considered Least Concern.
Mainly the use of ddt,which once in their system,caused their eggs to break very easily.Because of the shells being very thin.It is assumed the birds were getting this poison from the fish they ate.Farmers sprayed it on their fields,rain runoff put it into streams,where it was absorbed by the fish.
They became endangered because the pesticide DDT caused them to have difficulties processing calcium, which led to thinned eggshells. Luckily, with the ban on DDT, bald eagles recovered and they are now considered Least Concern.

The bald eagle, happily, is no longer an endangered species.

But back in the days, people used an insecticide called DDT, which eventually made its way into birds. In birds, it made the egg shells very fragile, so the eggs would crack either at laying or during roosting. And several species of birds became endangered. Look up a book called "the silent spring" for further info.

Their population was thinned by a side-effect of using pesticides, it thinned their egg shells, resulting in infant losses, however they are ranked as "Least concern"now, as their population has recovered
Bald Eagles are Endangered Species because of humans and hunters that are killing them either for food, their feathers or their fur and now as we stand or sit theirs a law about prohibiting devolopment with in three hundred thirty feet of an active Bald Eagle or its nest and its babies.
The Bald Eagle was endangered from the 1950's to the 1990's because of pesticides, such as DDT, that were later banned in the US. These chemicals made the eagle eggs very fragile, causing them to break when the eagles attempted to sit the nest. Some chicks survived but were unhealthy, and had problems reproducing. There were also mutations among the chicks, and many didn't survive long after hatching.

The pesticides were not only ingested directly, but the amounts were compounded through the food chain of the Bald Eagle as well. Even when the use of the chemicals was stopped, the eagles continued to be exposed through lingering contamination of their food and water.

The food source and water supply for most Bald Eagles is generally clear of most pesticides in the U.S. today, since their use has been strictly regulated. The pesticides were the major factor in the decline of this species, but human disturbances, including habitat loss, competition for food, hunting, and poisoning eagles are all factors that had an impact on the populations. The problems were so serious that protection for the species was enacted in 1940. The populations had been showing good signs of improvement with the new protection provided in 1940, until DDT and other such pesticides first came on the scene, and again caused population drops. DDT was eventually banned in 1972.

Status of the Bald Eagle

The Bald Eagle is now listed with a status of "threatened" by the U.S. Fish and Wildlife Service, Endangered Species List, in the Southwest region, including Texas, Arizona, Oklahoma, and New Mexico only.

The other populations of the Bald Eagle in the US have been posted with a status of "delisted due to recovery" by the US FWS, Endangered Species List.

All Bald Eagles are still protected by the Migratory Bird Treaty Act, and the Bald and Golden Eagle Protection Act.

(For more details, please see sites listed below.)
the reason bald eagles are endangered id because of the deadly shots by humans

HUMANS
Well, the bald eagle used to be endangered, but now they are only on the threatened list. But they were endangered by people hunting them. But now, it is illegal to hunt bald eagles.

people made up some spray to kill ckricket and other insect and duck eats insects and bald eagles eats ducks and that effect them cause that poisom make their body hard so when they lay their egg and try to keep them warm instead they break the eggs

DDT which is a powerful insecticide, when injested by eagle prey like fish, eventually found its way into the eagle's bodies, which made eggshells thinner, and many were broken. Today, a fantastic rebound is occuring, and the bald eagle is no longer an endangered species.

At one time the poison DDT was getting into the water, and fish that the eagles fed on passed the poison into the eagle's system. The eggshells were so thin that incubating eagles crushed them, and few young were being raised. The banning of DDT saw an increase in the eagle population, to where they are no longer considered endangered.

Answer 5

Mainly the use of ddt,which once in their system,caused their eggs to break very easily.Because of the shells being very thin.It is assumed the birds were getting this poison from the fish they ate.Farmers sprayed it on their fields,rain runoff put it into streams,where it was absorbed by the fish.

Answer 6

Mainly because of pesticides in the water that reduced the thickness of their eggshells, making it difficult to sit on them without breaking them. With the banning of ddt, the eagle has made an amazing comeback, and is no longer an endangered species.

Answer 7

Bald eagles have made a remarkable come back, and are no longer classified as an endangered species.