From the Illinois Hunting regulations page 7 (can be read at http://dnr.state.il.us/)


Feeding or Baiting of Wildlife

It is unlawful to make available food, salt,
mineral blocks or other products for ingestion
by wild deer or other wildlife in areas
where wild deer are present. Except:
• elevated bird/squirrel feeders providing
seed, grain, fruit, worms, or suet for
birds or squirrels located within 100 feet
of a dwelling devoted to human occupancy.
• incidental feeding of wildlife within
active livestock operations.
• feeding of wild animals, other than wild
deer, by hand as long as a reasonable
attempt is made to clean up unconsumed
food.
• feeders for wildlife other than deer so
long as deer are excluded from the
feed in and around the feeder by fencing
or other barriers.
• standing crops planted and left standing
as food plots for wildlife.
• grain or other feed scattered or distributed
solely as a result of normal agricultural,
gardening, or soil stabilization
practices.
• standing, flooded, or manipulated natural
vegetation or food/seed deposited by
natural vegetation.
• grain or other feed distributed or scattered
solely as the result of manipulation
of an agricultural crop or other feed
on the land where grown, for purposes
of dove hunting.
• food material placed for capturing or
killing wildlife pursuant to 520 ILCS
5/2.37, 2.30, and 1.3.
• scientific permits issued pursuant to 17
Ill. Adm. Code 520 that allow food to
attract wildlife.
• any other permits issued by the
Department of Natural Resources that
require the attraction of wildlife for purposes
of management, research or
control.
• Violation of the provisions of this part is
a Petty Offense with a maximum fine of
$1,000.