Its gorgeous outside but you can't walk on Denning's Point, to protect bald eagles from being disturbed.
However, bald eagles are an American wildlife management success story, taken off the federal endangered species list 5 years ago (I see them a lot from the train, usually around Peekskill). NY State is now considering taking them off the state's protected species list. Opening Denning's Point in the winter months would then be a fait accompli. From PoJo (if you can get past the new paywall):
the state is quietly re-examining the issue of the park’s winter closure, and of the bald eagle’s status as a protected species in New York. Scientists from the state Office of Parks, Recreation and Historic Preservation recently wrapped up field work for a study of eagle behavior at Denning’s Point. The study, which has not been publicized, is being done in conjunction with the state Department of Environmental Conservation.
The two agencies are weighing whether to keep the park closed between Dec. 1 and March 31, or whether to open it year-round. Beyond that, the DEC is developing a larger bald eagle management plan.