With Minnesotas bear hunting season set to open on September 1, the states Department of Natural Resources (DNR) has issued an important reminder to hunters: avoid harvesting ear-tagged and radio-collared research bears. These animals, marked with large, colorful ear tags and equipped with GPS collars, are vital to ongoing studies monitoring bear ecology, habitat use, reproduction, and interactions with humans. Currently, the DNR is tracking approximately 50 collared black bears across the state, primarily within zones 27, 45, and portions of the no-quota zone. Many of these animals roam near the Chippewa National Forest, Camp Ripley, the Brainerd/Baxter area, and Duluth, though their ranges often extend beyond these core sites. The majority of collared bears are female, making them particularly valuable for understanding reproduction and cub survival. Collared sows provide critical long-term data on cub survival rates, reproductive cycles, and denning behaviorsinsights that would be impossible to replicate if a collared animal were harvested prematurely. According to DNR bear research scientist Andrew Tri, the long-term nature of the data is what makes the program irreplaceable. 'These collared bears give us much of the data we use in bear management and are most valuable when collared for multiple years,' Tri explained, thanking hunters who have respected the guidance in past seasons. Harvesting a collared bear interrupts years of accumulated information and sets back management goals. In addition, data gaps caused by the loss of a collared bear cannot easily be filled, given the costs and challenges of capturing and collaring new animals. The GPS collars worn by these bears collect thousands of location points annually, either transmitted via satellite or downloaded during den visits. These records allow biologists to assess shifts in habitat preference, food availability, seasonal movements, and bear-human interactions. For example, collared bears provide detailed information about how bears respond to seasonal food shortages, crop harvests, or suburban encroachment. Such data informs not only hunting regulations but also broader wildlife management strategies, such as how to reduce human-bear conflicts near residential areas. While hunters may legally take a collared bear, the DNR strongly advises against it. Officials stress that pausing to check for visible tagsoften apparent on trail camera photos or in the fieldcan make the difference between preserving or losing a critical research subject. In many cases, hunters who spot a collar or ear tag have chosen to let the animal pass, preserving years of research data while still finding success with uncollared bears in the same region. The agency stresses that a single moment of awareness can sustain invaluable research for years to come. In addition to collars, some research bears also carry implanted heart monitors beneath the skin. These devices track heart rates and other physiological responses, helping researchers understand how bears react to stressors such as human disturbance, hunting pressure, or environmental change. If a collared bear is harvested, hunters are asked to recover and submit both the collar and the implant, as these contain irreplaceable physiological data. Without this information, critical aspects of bear biology remain unexplored. Hunters should also be aware of smaller tags (1 x 1/4 inch) on some bears. These animals are not part of the radio-collar project but are included in other research efforts. While it is legal to take these animals, the DNR asks hunters to report any such harvest so the tags and data can be recorded. Accurate reporting ensures that no data is lost and helps wildlife managers keep track of population dynamics, even when tagged animals are harvested legally. This initiative reflects the cooperative balance between scientific research and hunting tradition in Minnesota. Bears harvested legally remain an important part of wildlife management, providing both recreational opportunities and ecological balance. However, sparing collared animals ensures the long-term health of the population and improves the quality of future hunting seasons by guiding evidence-based regulations. Conservationists emphasize that hunters are partners in wildlife stewardship, and by voluntarily sparing research animals, they help protect the very resource that sustains the tradition of bear hunting.