1. A vehicle behavior learning apparatus comprising: a memory that stores pieces of feature information including position information and attribute information of a plurality of target features; and a controller that is connected to a plurality of vehicles in such a manner that communication is possible between the controller and the vehicles, and that: obtains vehicle position information that shows a current position of a vehicle; obtains image information of surroundings of the vehicle; obtains one of the stored pieces of feature information corresponding to the surroundings of the vehicle based on the vehicle position information; performs an image recognition for recognizing a target feature contained in the image information that corresponds to the obtained piece of feature information; detects a behavior of the vehicle that is performed within a predetermined range from a position of the recognized target feature; based on the vehicle position information, stores the detected behavior in correspondence with information of a position in which the detected behavior was detected; based on the detected behavior being stored a plurality of times at the same position, extracts the detected behavior as a learned behavior; when the detected behavior is an operation of the vehicle caused by an external factor affecting the vehicle from outside, extracts, as the learned behavior, the detected behavior, the detected behavior being stored a plurality of times among memories of the plurality of vehicles at the same position; and outputs learned behavior information, the learned behavior information including attribute information of the detected behavior and the position information of the detected behavior, each of which are kept in correspondence with the piece of feature information of the recognized target feature.