You should pay attention when spur-winged plovers (aka masked lapwings) move in nearby. They will readily and actively claim territory consisting of open grassland or waterside spaces. When nesting, an aggressively defensive frame of mind transforms this bird into an effective dive bomber. Their attacks consist of noisy machine gun like chatter as they stab at you with weaponised wings. As you can see, the sharp wing spurs have plenty of potential to cause injury.