One of the characteristics of spotted geese in flight is that they often fly in a certain formation, and the birds behind usually fly behind the side of the previous bird
they have a common human formation. Some researchers believe that this formation can reduce air resistance and reduce flight energy consumption. However, opponents believe that if it is to reduce resistance, birds should choose a straight line formation, because one flight after another can minimize the air resistance that followers need to overcome.
Spotted geese will have the need to determine the direction when flying, so they will not always fly in the shape of human