Michigan wildlife researchers have placed tracking collars on 56 moose in the Upper Peninsula as part of a study investigating the herd's stagnant population growth. The project, which began last year and runs through 2028, aims to understand why moose numbers haven't reached earlier projections of 1,000 animals. Field crews captured 41 moose last month, more than doubling last year's efforts.

Two moose died during the February collaring operation, including a mature cow and young bull. Necropsies revealed the cow had significant lung and liver disease that complicated sedation, while the bull showed no underlying conditions. Following these deaths, researchers modified protocols to reduce anesthesia time for each animal. The study has already collected 22,000 GPS locations from newly collared moose, adding to 200,000 locations gathered from last year's subjects.

Wildlife officials estimate the core moose herd at about 300 animals, representing a roughly 30% decline from the 426 counted in the 2023 survey. Known threats include gray wolves, black bears, vehicle collisions, and winter ticks. Researchers are investigating whether the herd is declining, migrating away from traditional ranges, or both. The data from collared moose will help determine habitat use patterns and survival rates as scientists work to understand Michigan's mysterious moose decline.