White-tailed Deer on Fire Island
Deer population studies at Fire Island National Seashore reveal that there are approximately 300-400 white-tailed deer on Fire Island, and about 140 deer at the William Floyd Estate.
Deer density, or the number of deer per square mile (DPSM), varies widely between locations on Fire Island. This number is frequently provided as "deer per square kilometer," or deer/km2, in many studies. For a long, narrow landform like Fire Island, each square mile may be the equivalent of 3-5 linear miles of the barrier island, depending upon its width.
At the 613-acre William Floyd Estate, deer density is about 140 DPSM or 54 deer/km2.
The number of deer, however, is not as important as the impacts related to their abundance and distribution.
So, where are all the deer? White-tailed deer are crepuscular. That means that they are typically active at dawn and dusk, and may be out of sight during the middle of the day.
Learn more about Fire Island National Seashore's Deer Population Studies and White-tailed Deer Management Plan.