What behavior might discourage a falcon when hunting its quarry?

Aggressive behavior from the quarry can be particularly discouraging to a falcon when hunting. Falcons rely on stealth and their ability to surprise their prey for a successful hunt. If the quarry exhibits aggressive behavior—such as charging at the falcon or making loud distress calls—it can create a threatening environment that may lead the falcon to retreat rather than risk confrontation. This is especially true when dealing with larger or more formidable prey that may pose a danger to the falcon. Being met with aggression can alter the falcon's instinctual response to hunt and may cause it to abandon the chase altogether in favor of a more cautious approach.