These defensive behaviors are meant to scare away threats, however, and not to sound an attack.
When disturbed, the workers may exhibit a defensive behavior known as defense waving.
However, we should not get conflict and defensive behaviour out of perspective.
Predatory or defensive behavior between members of different species is not normally considered as "aggression."
Predatory or defensive behavior between members of different species may not be considered aggression in the same sense.
The defensive behaviour of the other species is not yet studied in detail.
Strategy is another form of defensive behavior, which can be used when a person feels threatened.
Another form of defensive behavior in communication is superiority.
In other words, this defensive behavior is caused by both chemical and mechanical means.
But there certainly has been some defensive behavior, particularly on the part of those two who just left.