Illinois Whitetail Rut Dates & Deer Movement

Where do the Illinois rut dates come from?

A 2017 study by the Illinois Natural History Survey and the University of Illinois, with an IDNR co-author, measured Illinois breeding dates. It tested nearly 3,900 female deer culled in northern Illinois and dated conception from their fetuses. Breeding peaked in November, with average conception on November 8 for adult does, November 11 for yearlings and December 2 for doe fawns.

IDNR describes the breeding season as October through January, and the regional windows above are our estimate. The study's adult and yearling averages fall in the first week of the northern and central windows. It sampled only the north, so it says nothing about the later central and southern windows.

Sources: Theriogenology 2017, reproductive characteristics of female white-tailed deer (Illinois Natural History Survey, University of Illinois and IDNR), PubMed record; Pathogens 2025, CWD and pregnancy in northern Illinois deer (Illinois Natural History Survey and IDNR), PubMed Central record; IDNR, Wild About Illinois Deer; IDNR, Inside Illinois DNR, October 2019 (PDF).

How do the 2026 seasons in Illinois line up with the rut?

In counties with a firearm season, archery closes for both gun seasons, so the 2026 to 2027 calendar runs like this:

• Archery: October 1 to January 17, closed November 20 to 22 and December 3 to 6
• Youth firearm: October 10 to 12
• First firearm season: November 20 to 22
• Second firearm season: December 3 to 6
• Muzzleloader only: December 11 to 13

The first archery stretch, October 1 to November 19, covers both study averages and most of every window above. The first firearm season hits the tail of the central and southern windows, and archery closes for it except in Cook, DuPage, Lake and eastern Kane counties. Doe fawns breed around December 2 on average, just before the second firearm season.

Sources: IDNR, deer archery hunting information; IDNR, deer firearm and muzzleloader hunting information; IDNR, youth deer hunt information.

How many deer do Illinois hunters take?

IDNR's summary of the 2024 to 2025 seasons counts about 171,000 deer. About 46 percent were antlered, and about 64 percent of antlered bucks were 2.5 years or older. Bowhunters took about 73,600 deer and firearm hunters just over 83,000.

The preliminary 2025 firearm count was about 81,200 deer, a little under 2024's 82,500.

Sources: IDNR summary of 2024-2025 Illinois deer seasons (PDF); IDNR news release, 2025 firearm deer season harvest (PDF).

Where is the public ground in Illinois?

IDNR says Illinois ranks 46th in the nation for publicly owned land, with more than 97 percent private, and its public hunting areas report lists 214 public hunting and trapping areas. The biggest block is the Shawnee National Forest, about 289,000 acres in the far south, where state rules apply, private land is mixed in and permanent deer stands are banned.

Since 2011 the Illinois Recreational Access Program has leased more than 27,000 acres of private land in 52 counties for outdoor recreation, and IDNR says archery deer hunting there remains in high demand.

Sources: IDNR, Illinois Recreational Access Program; IDNR Illinois public hunting areas report, 2023-2024 (PDF); USDA Forest Service, Shawnee National Forest; USDA Forest Service, Shawnee National Forest hunting and shooting.

Which Illinois rules change a rut hunt?

• The limit is two antlered deer a year across the youth, archery, muzzleloader and firearm seasons, and antlered means at least one antler 3 inches long.
• Baiting and feeding deer are illegal (food plots are exempt), and a spot counts as baited for 10 days after the bait is gone.
• Crossbows are legal for every bowhunter and took 54 percent of the 2024 to 2025 archery harvest.
• Gun hunters wear a solid blaze orange or pink cap and upper garment, as do bowhunters during any open gun season.
• CWD, first found in Boone County in 2002, reached 25 counties by June 2025 and has since turned up in Stark, Scott and Effingham. In listed CWD counties, firearm deer go to a check station by 8 p.m. the day they are killed.
• IDNR's 2024 to 2025 digest lets out-of-state deer carcasses in only as deboned meat, antlers, cleaned skull caps, hides, teeth or mounts, or straight to a licensed processor or taxidermist within 72 hours.
• Nonresidents get one combination archery permit a year, by June online lottery or over the counter from August 3 if any remain, at $411 plus fees.
• Firearm permits are sold by county through lotteries, with leftovers sold over the counter from October 20.

Sources: IDNR 2026-2027 archery deer harvest reporting and hunting regulations sheet (PDF); IDNR 2026 firearm and muzzleloader deer harvest reporting and hunting regulations sheet (PDF); IDNR 2026 firearm deer check stations in CWD counties (PDF); IDNR, chronic wasting disease management; IDNR CWD annual report, 2024-2025 (PDF); IDNR Illinois digest of hunting and trapping regulations, 2024-2025 (PDF); IDNR summary of 2024-2025 Illinois deer seasons (PDF); IDNR, deer archery hunting information; IDNR, deer firearm and muzzleloader hunting information.