New Jersey Issues Seasonal Alert as Venomous Snakes Become Active in Warmer Months
As temperatures rise across New Jersey, outdoor activity is increasing—and so is the natural movement of the state’s snake population. Wildlife experts note that this is the time of year when snakes emerge more frequently as they travel between shelter areas and feeding grounds after the colder months.
According to the New Jersey Department of Environmental Protection, the state is home to 22 different snake species. While most of them are harmless and play an important role in the ecosystem, there are two venomous species residents should be aware of during spring and summer: the timber rattlesnake and the northern copperhead.
Officials emphasize that both species are naturally shy and avoid human contact whenever possible. However, as urban development continues to expand into forested and rural areas, encounters can happen more often, especially during warmer months when snakes are more active outdoors.
The timber rattlesnake is the more recognizable of the two venomous species due to its distinctive rattle, which acts as a warning signal. It is the only snake in the state with this feature. However, wildlife authorities caution that sound alone should not be relied upon for identification, as some non-venomous snakes can mimic a rattling sound by moving through dry leaves.
In terms of appearance, the timber rattlesnake typically has thick, dark band-like patterns running across its body, which become more defined toward the tail. The tail ends bluntly with a rattle and is often darker in color. Despite this, its coloring can vary significantly, with some appearing lighter or darker depending on the region and individual snake.
These rattlesnakes are mostly found in specific parts of the state, including sections of the Kittatinny Ridge in the Highlands region, northern Highlands areas, and parts of the Pine Barrens in southern New Jersey.
The northern copperhead, on the other hand, is more difficult to identify and is often confused with non-venomous snakes such as the northern water snake and eastern milk snake. Its most recognizable feature is a unique hourglass-shaped pattern across its body, where darker bands are narrow at the top and wider along the sides. However, experts warn that relying on color alone is not reliable since several snake species can appear similar.
Copperheads are relatively rare in New Jersey and are mostly found in wooded and hilly regions in the northern part of the state, with small isolated populations in areas of Hunterdon and Somerset counties.
Wildlife officials advise residents to remain cautious but calm if they encounter a snake. The New Jersey Department of Environmental Protection recommends keeping a safe distance and never attempting to touch or handle any wild snake, regardless of species. People are also encouraged to stay on marked trails while hiking, wear protective footwear, and use a flashlight when moving outdoors during low-light conditions.
Additional precautions include avoiding tall grass, piles of leaves, and stacked wood or rocks where snakes may hide. Homeowners are also advised to seal any cracks or openings in building foundations and to supervise pets outdoors, keeping them on leashes where necessary.
Under state conservation law, all native snakes in New Jersey are protected. It is illegal to harm, kill, or capture them, whether they are venomous or not. To manage public safety concerns, the state operates a specialized Venomous Snake Response Team made up of trained volunteers, including wildlife experts and local officials, who safely relocate snakes when needed at no cost.
In the rare case of a snake bite, authorities stress the importance of staying calm and seeking medical attention immediately. The affected area should be kept lower than the heart while waiting for emergency care. Residents are strongly advised not to attempt home remedies or use unverified extraction methods.
Despite public fear, officials highlight that venomous snake bites in New Jersey are extremely rare, and there are no recorded fatalities from wild venomous snake encounters in the state. Wildlife experts further note that snakes are not aggressive toward humans and typically strike only when they feel threatened or cornered.
As warmer months continue, experts encourage residents to stay informed, remain aware during outdoor activities, and respect wildlife from a safe distance.
Sources:
New Jersey Department of Environmental Protection (DEP)
DEP Endangered and Nongame Species Program
