State and federal wildlife officers found the damaged nest near the tall pine in Millville in Cumberland County after responding to a citizen's report. They also found evidence a chain saw had been used.
Authorities say the destruction of the nest, which violates the federal Bald and Golden Eagle Protection Act, took place in mid-January.
The U.S. Fish and Wildlife Service is offering a $2,500 reward for information leading to the conviction of those responsible. The New Jersey Audubon Society has offered to increase the award by an additional $1,000.