The bad news is that in many areas, only one of every two fawns born will make it into the fall herd. Predation is the leading cause of fawn mortality. Sadly, some areas see few, if any, fawn survival due to excessive predation. Coyotes, bears, and bobcats can wipe out 70 to 80 percent of a fawn crop, on occasion, even more. Studies indicate that most fawn predation occurs during the first three weeks of a fawn's life.