Druids usually have the least to worry about. As they do not usually mingle with societies, they have little opportunity to be known as spellcasters. Most people see them as common nature lovers. The druids like it this way.
Little else is known about them except that they are very familiar with the dangers of the wild. Whenever they warn someone that if they don't stay out of the woods, they'll get mauled by a bear, sure enough, it happens. And that person was darn foolish for paying no attention to the druid's paternal warning.
(Note to players: The druids are not unreasonable. They will allow passage and, they will allow a fair amount of hunting and gathering, but they will not allow undue damage to their lands. Unavoidable accidents, they will forgive. Honest, simple mistakes will provoke a warning and instruction. Stupid and destructive mistakes or unheeded warnings will provoke a conflict. And you are on their home turf.)