New Hampshire's Fish and Game Department is taking to the air to survey the state's moose herd.
Residents in northern communities may see low-flying helicopters between Jan. 20 and Feb. 2.
Crews will use tranquilizers and nets to capture the moose and put collars on them. Researchers want to track about 80 moose over a three-year period and compare the results to an earlier study to determine mortality rates. Biologists believe the moose herd has been heavily damaged by winter ticks.