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DNR is making its greatest investment ever in Wisconsin deer research. Photo courtesy of Emery Orlikowski of Green Bay

ways to reduce wildlife-human conflict and avoid wildlife damage.
Wisconsin's rare plants, animals and natural communities.
tips to manage your land for wildlife.
about wildlife health and rehabilitation.

Deer management

Wildlife biologists in Wisconsin have developed population models for deer. The model depends on information gathered primarily from the hunters themselves. Such information includes the actual number of deer harvested annually, and the sex and age of each animal. When applied to a specific geographical "unit," it is possible for biologists to accurately estimate the number of deer living in that unit. They can then estimate the numbers that may be harvested to keep populations at healthy levels that are socially acceptable to both hunters and nonhunters alike. For more information, please feel free to read "Wisconsin's Deer Management Program [PDF]: the issues involved in the decision-making."

Harvest information

Read more Wisconsin wildlife reports.


The SAK Stakeholder Steering Committee received a draft report reviewing Wisconsin DNR's use of the Sex-Age-Kill (SAK) deer population model. The report is from a SAK Model Review Panel consisting of biologists and statisticians selected by the SAK Stakeholder Steering Committee. The Natural Resources Board accepted the SAK audit report in February of 2007.

Tim Van Deelen, Wildlife Professor from the University of Wisconsin, provides a brief explanation of the SAK model.

Dr. Mark Boyce delivered the review panels draft report to the state Natural Resources Board on Dec 5, 2006 and repeated his presentation for this recording.

Contact information
For information on deer management, contact:
Anna Brose
Assistant big game ecologist
Bureau of Wildlife Management
Last revised: Friday April 19 2019