When utilizing a flying vehicle to monitor an animal that is grazing, the stress of the animal targeted for monitoring is mitigated. An acquisition unit acquires position information indicating the position of an animal that is grazing. A determination unit determines the reactivity of the animal to the approach of a flying vehicle. A setting unit sets a distance that depends on the determined reactivity. An instruction unit instructs the flying vehicle to start flying toward a monitoring position corresponding to the position indicated by the acquired position information and the set distance, and to perform processing for monitoring the animal on the basis of the monitoring position.