DULUTH, Minn. (AP) — A study of Minnesota moose calves confirmed the high mortality rate for newborns almost as soon as the animals were given radio collars.

The Minnesota Department of Natural Resources captured 49 moose calves and fitted them with GPS transmitter collars. Within days of finishing their work, 22 of the newborns already had died, the Duluth News Tribune reported Friday (http://bit.ly/ZyboGk ).