That is because when they perceive a threat to their nests, hundreds of them will sometimes attack intruders.

They are extremely protective of their nests and young, and will not hesitate to attack intruders.

Most specimens are aggressive and hostile towards strangers, and will attack intruders.

They patrol around their respective camps and will attack intruders on sight.

Full of vitality, it constantly patrols its territory, mercilessly attacking intruders.

For example, nesting gull colonies are widely seen to attack intruders, including humans.

They have been known to attack intruders in mobs thus showing they are a community-like bird.

Those in 10a and 10f will animate to attack intruders, using stomp attacks; they use the profiles of standard Skeletons.

Like all white terns, it is defensive of its nest and young and will attack intruders.

The male defends its territory aggressively, attacking and chasing intruders.