Defensive Behavior
Two bumblebees converge on the same flower, one pausing mid-visit with a raised leg as another passes close by, creating a fleeting moment of tension atop the bloom.
Defensive signaling
Bumblebees may raise a middle leg as a defensive response when they feel threatened, a visual warning that can precede more active defenses if the perceived threat continues. (Source: Bumblebee.org)
