Which Gestalt grouping cue explains why a flock of birds flying in formation are perceived to be grouped?

Question

Quizplus · Accepted Answer

Common fate is the Gestalt grouping principle that explains why elements moving in the same direction or manner are perceived as a unit. In the case of a flock of birds flying in formation, we perceive them as grouped together because they share the same movement direction, illustrating the principle of common fate.

Which Gestalt Grouping Cue Explains Why a Flock of Birds