Ice fishermen are being urged to remove their shacks from lakes and rivers. Manitoba Conservation and Water Stewardship is urging individuals with ice shacks in southern or central Manitoba to take the structures off the ice as soon as possible, as long as conditions allow a safe removal.  Extremely warm temperatures are causing ice conditions to deteriorate faster than normal in these areas.  March 31st is the normally the last day for removal of ice shacks in the south, but the recent weather means that early removal is required.