EXTREMELY AGGRESSIVE! I know this is for magpies but the swooping nature of the plovers cannot be ignored. Swooping is by father and mother protecting a nest with three brown spotted eggs on the ground inside the circular fenced cricket ground when trying to establish that there was in fact a nest. The closer to the nest, the more aggressive until we were swooped at three second intervals. After we established the fact, we backed off. The nest is in danger of being destroyed when the grounds are mowed next.