As of 2014, bald eagles are not listed as endangered, but are threatened. However, bald eagles have been considered endangered in the past. Bald eagle numbers took a plunge in the United States due to hunting and exposure to harmful pesticides.
Regulations placed on the use of DDT, a common pesticide, in 1972 greatly helped the bald eagle population recover. Bald eagles are found throughout the United States but are most densely populated in Alaska and Canada. Bald eagles are seen in habitats near water, and their diet consists largely of fish and various small mammals. These birds live up to around 28 years in the wild on average.