As WRI's principal biologist, Lynn Rogers, Ph.D., has spent over 42 years learning about wildlife and sharing his information with the public. Using airplanes, vehicles, and snowshoes, he has radio-tracked over 100 bears in the vast forests of northeastern Minnesota, studying some for as long as 22 years.
Sue Mansfield began studying black bears in her home state of New Hampshire in 1999. Her initial studies involved documenting bear sign, including bear trails, marking sign, and feeding sign. She developed a collection of seeds from berries to identify items found in bear scat while studying the diet of bears. Sue placed trail monitors along bear trails to determine usage and aimed trail cameras at marking trees along bear trails to document behaviors.