Feral Swine

A Threat To Illinois

Feral Swine

History of Feral Swine in Illinois

  • Feral swine, aka feral hogs, feral pigs, wild boar, razorbacks, are all defined as feral if they are unrestrained and have adapted to living in a wild or free-ranging environment.
  • Feral swine most often result from free range livestock, dumped pets, and intentional releases by individuals desiring to establish populations for recreational purposes.
  • The first reports of feral swine in Illinois occurred in the early 1990’s among several southern Illinois counties.
  • As many as 32 counties have reported the presence of feral swine; most of which have been the result of escaped livestock and dumped pets.
  • After extensive investigations, two self sustaining breeding populations were identified in Illinois.
Feral Swine
Feral Swine

Threats to Fish and Wildlife

  • Feral swine compete directly with native wildlife for habitat and food sources such as acorns, nuts, and food plots.
  • Damage to soil, agricultural crops, and natural habitats result from feral swine wallowing, rooting, trampling, and feeding behaviors.
  • Feral swine prey upon native wildlife including amphibians, reptiles, small mammals, and eggs and the young of ground-nesting birds,
  • Rooting and wallowing leads to soil erosion, sedimentation, and decreases water quality.
  • Feral swine have high reproductive rates — adults sows may have 2 litters per year with 5-10 piglets per litter. Juveniles may begin breeding in as little as 6 months of age. At these rates, 60-70% of the population must be removed each year just to keep the population from increasing.
  • Adults have no natural predators.
Corn trampled by feral swine

Disease Threats

  • Feral swine may carry more than 30+ parasites and 30+ diseases, many of which are transmissible to people, pets, wildlife, and livestock.
  • Diseases most often effecting people include brucellosis, E coli, salmonella, and trichinellosis.
  • Feral swine also have the potential to carry diseases that affect domestic swine such as classical swine fever, pseudorabies, and tularemia.

Safe Field Dressing Tips

  • Avoid all contact with visibly ill animals or those found dead.
  • Wear eye protection and rubber or latex gloves (disposable or reusable) when handling carcasses.
  • Avoid direct contact (bare skin) with fluid or organs from the hog.
  • Properly dispose of disposable gloves and inedible parts of the carcass after butchering.
  • Wash hands as soon as possible with soap and warm water for 20 seconds or more and dry hands with a clean cloth.
  • Clean all tools and reusable gloves used in field dressing and butchering with a disinfectant - such as dilute bleach (Read the safety instructions on the label).

Food Safety Tips

  • Wash hands often with soap and warm water for 20 seconds or more.
  • Clean surfaces often with hot, soapy water.
  • Separate raw pork from cooked pork and other foods.
  • Cook pork to an internal temperature of 160 degrees F using a food thermometer.
  • Chill raw and cooked pork promptly.

Illinois’ Damage Management Program

  • IDNR and USDA Wildlife Services are working in collaboration with landowners throughout the state to eliminate feral swine from their properties.
  • Program consists of education, outreach, disease monitoring, and direct management activities.
  • Assistance is provided to identify if feral swine are present on properties, provide training, and implement effective methods of removal - all free of charge.
  • Trapping (corral traps) is the most efficient and effective way to remove entire family groups of feral swine.
  • Shooting is effective only at removing individuals, not at eliminating large groups/populations.
Feral Swine
Feral Swine
Feral Swine
Feral Swine

Legal Status

  • Swine are considered feral if they are unrestrained and have adapted to living in a wild or free-roaming environment.
  • Feral swine may only be shot by hunters who are deer hunting during the firearm deer seasons, including the late winter and CWD seasons.
  • Hunters need to be sure the swine they intend to shoot are not escaped livestock.
  • It is illegal to transport, release, to guide or to hunt feral swine in an enclosure.
  • Landowners are required to obtain a free nuisance wildlife permit to remove feral swine outside of firearm deer seasons.

For more information regarding feral swine refer to the following Web sites and video:

To Request a Nuisance Wildlife Removal Permit or to Report Sightings of Feral Swine contact:
Illinois Department of Natural Resources at (773) 636-0819
USDA, APHIS, Wildlife Services at (866) 487-3297

It is against the law to intentionally release any hog onto land in Illinois
Report releases to IDNR Law Enforcement at 1-877-2DNRLAW

Feral Swine: A Threat to Illinois

Wild Hog Hunting: Protect Yourself

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