Abstract

Bald eagles (Haliaeetus leucocephalus) in New Jersey once numbered approximately 22 pairs, but declined to just one nesting pair by 1970. This decline mirrored the national trend, caused by the effects of the pesticide dichlorodiphenyltrichloroethane (DDT). With the ban on DDT, and state and federal eagle recovery programs, the eagle population has increased substantially. The bald eagle is currently listed as a threatened species by the United States government, and as endangered by the state of New Jersey. Since it is a relatively long-lived bird, the species remains sensitive to environmental toxins that bioaccumulate and affect reproduction (Bowerman 1993, Wiemeyer et al. 1993, Nisbet and Risebrough 1994).

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