CLAM LAKE, Wis. (AP) – It has been a productive summer for the elk herd near Clam Lake in northern Wisconsin.  The Wisconsin Department of Natural Resources says about three dozen elk calves have been born. And, for the first time since the elk were re-introduced to the area 18 years ago, female calves outnumbered males.  Elk biologist Laine Stowell says even though birth weights are lower than average, the calves are doing well, probably because plenty of food is available for the mother cow.   Stowell tells Wisconsin Public Radio News ( ) that none of the calves have been killed by bears so far. Stowell says the mortality rate can be as high as 25 percent, but he thinks the bear-hunting season is helping the elk herd.  Wolves are another concern. Stowell says they are most dangerous to young elk from January to mid-May.

—      Information from: Wisconsin Public Radio,