what is the reason for its population declination?
The use of pesticide DDT, loss of suitable habitat and both legal and illegal shooting.
Bald eagle
pesticide DDT
where did the bald eagle get its name It gets both its common and specific scientific names from the distinctive appearance of the adult's head. where is it commonly found? North America
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Bald eagle [SEP] Population decline and recovery
Once a common sight in much of the continent, the bald eagle was severely affected in the mid-20th century by a variety of factors, among them the thinning of egg shells attributed to use of the pesticide DDT. Bald eagles, like many birds of prey, were especially affected by DDT due to biomagnification. DDT itself was not lethal to the adult bird, but it interfered with the bird's calcium metabolism, making the bird either sterile or unable to lay healthy eggs. Female eagles laid eggs that were too brittle to withstand the weight of a brooding adult, making it nearly impossible for the eggs to hatch.