Solebury Sees Drop In Deer Population

A recent survey showed a significant decrease in the deer population in Solebury Township

Jessica Ray, a staff scientist specializing in ecological research and restoration at Raritan Valley Community College, presented the findings to the Solebury Township Board of Supervisors recently.

The results were thanks to a recent infrared drone survey carried out in the township.

Using drones equipped with thermal imaging cameras, the college team was able to accurately survey deer numbers.

Ray said using drones are more useful than a plane because the drone can hover and move around to check behind structures and trees.

The data showed that there are currently 48 deer per square mile, a marked reduction from previous years.

The decline is largely attributed to the township’s culling program, which, according to Ray, has resulted in nearly a 40 percent decrease in the deer population over the past four years.

Ray pointed to the ecological impacts of high deer densities. She noted that more than 10 deer per square mile can hinder tree regeneration and adversely affect other wildlife.

An ideal number for a healthy forest ecosystem is 10 deer per square mile, she stated.

In response to the results, Ray recommended that the township should work to further reduce deer densities to between 10 and 15 per square mile before shifting to a maintenance phase of population control.

Ray also suggested collaboration with neighboring municipalities to coordinate deer reduction efforts, which could lead to fewer vehicle collisions and better environmental conditions overall.

Township Manager Christopher Garges confirmed a decrease in deer-related vehicle incidents since the initiation of the culling program.

The township’s culling program is a joint effort with the U.S. Department of Agriculture Wildlife Services and focuses on controlling the deer population during the winter and spring seasons.