"Bald Eagles to Be Taken Off Endangered List." “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 DDT created an abundance of calcium in the eggshells too, which led to brittle eggs that easily snapped when delivered. The bald eagles have to build their nests near marshes, rivers and lakes where they can easily hunt for fish. (Aug. 11, 2008)http://news.nationalgeographic.com/news/2007/06/070628-bald-eagles.html, Slevin, Peter. "Bald Eagle Leaves Endangered Species List." In 2007, the bald eagle population in the United States reached a level that brought it down from the "endangered" list to the "threatened" list, so scientists are hopeful for the growth of the species. "Bald Eagles Soar Off Endangered Species List, But Will Act Be Weakened?" You consent to our cookies if you continue to use our website. The Franklin Institute. Festival of Sacrifice: The Past and Present of the Islamic Holiday of Eid al-Adha. Weird & Wacky, Copyright © 2020 HowStuffWorks, a division of InfoSpace Holdings, LLC, a System1 Company. It caused female eagles to be unable to reproduce and when they did reproduce, the insecticide would often cause infertile eggs. The bald eagle is the national symbol for the United States, so the American government decided to enact the Endangered Species Act to protect the bird. Washington Post. It caused female eagles to be unable to reproduce and when they did reproduce, the insecticide would often cause infertile eggs. (Aug. 11, 2008)http://www.fws.gov/migratorybirds/issues/BaldEagle/Bald%20Eagle%20Final%20Q&As.pdf, "Benjamin Franklin FAQ." Will 5G Impact Our Cell Phone Plans (or Our Health?! Fish and Wildlife Service. June 28, 2007. We also share information about your use of our site with our social media, advertising and analytics partners who may combine it with other information that you’ve provided to them or that they’ve collected from your use of their services. From there, eagles would ingest the fish and effectively consume the poison. 1995: Bald eagles in the lower 48 states are moved from endangered status to threatened status. (Aug. 20, 2008) http://www.fws.gov/news/NewsReleases/showNews.cfm?newsId=A4C4116B-F819-28C1-B8DCE55F7D9C5976, Roach, John. Is the Coronavirus Crisis Increasing America's Drug Overdoses? 2007: The government formally removes bald eagles from the endangered species list. However, conservationists later classify the Sonoran Desert bald eagle as threatened in 2008. Fish and Wildlife Service. In 1972, the chemical DDT was restricted in many areas, allowing bald eagles to reproduce fully once again without trouble. Once in their bloodstreams, DDT caused females to produce eggs with shells too thin to protect the embryo. Once DDT was banned and the species was fully protected under the fledgling Endangered Species Act , however, eagle numbers began to rebound, gradually at first and then with increasing vigor. 1962: Congress later amends the act to include the golden eagle, renaming it the Bald Eagle and Golden Eagle Protection Act. DDT had caused problems for the bald eagle because it altered the bird's nervous system. (Aug. 11, 2008)http://www.fws.gov/species/species_accounts/bio_eagl.html, "Bald Eagle Recovery: Questions and Answers." It wasn't until the 1960s and 1970s that Bald Eagles became an emblem of the environmental movement as their numbers plummeted from the effects of the pesticide DDT. National Geographic News. "Bald Eagle." We use cookies to personalise content and ads, to provide social media features and to analyse our traffic.
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