java - inheritence class not compiling -

i playing around code , learned inheritance in class today, cant compile , dont know wrong, says can not find c in line colorfeathers = c

public class bird extends inheritance{      private string colorfeathers;      public bird(string c, string n){         super("bird:" , n, 2, 0);         colorfeathers = c;     }      public string getcolor(){return colorfeathers;}      public void setcolors(){colorfeathers = c;}      public string tostring(){                      string hold = super.tostring();          hold += "color:" + colorfeathers;         return hold;        } } 

the problem in public void setcolors(){colorfeathers = c;} not passing in c string variable unknown in context of setcolors method