It was only 40 year's ago when bald eagles were almost completely gone from New Jersey. This year according to the State Department of Environmental Protection 220 nesting pairs have been confirmed. Over 307 baby eagles have hatched. Extensive use of the pesticide DDT almost wiped out bald eagles all together. The ban on the use of the pesticide and the Clean Water Act facilitated their come back. Back in 1982 there was only one nesting pair left in New Jersey. With the confirmation of a nesting pair in Essex County there are now bald eagle pairs in all 21 New Jersey Counties.
Source: North Jersey dot Com