Minnesota's bear hunting season opens Tuesday morning.
The Minnesota Department of Natural Resources is asking hunters not to shoot bears with radio collars. The DNR says those animals help researchers collect valuable data.
DNR researchers are monitoring about 30 radio-collared black bears, mostly in northwestern Minnesota near the Thief Lake, New Main, Twin Lakes, Pelan, Beaches Lake, Skull Lake and Caribou wildlife management areas, as well as the Agassiz National Wildlife Refuge.
Other radio-collared bears live in and around the Chippewa National Forest, Camp Ripley, the Cloquet Forestry Station, Voyageurs National Park, and the Eagles Nest chain of lakes between Ely and Tower.
Most of the monitored bears have highly visible blaze orange collars.