Why Don't All Birds Fly in V Shapes?

The video explores why different bird species use various flight formations, such as the V shape or clumps. Larger birds like geese benefit from the V formation by conserving energy and maintaining visual contact. This is due to the vortices created by their wing flaps. Smaller birds, however, do not generate consistent vortices and often fly in clusters for protection against predators, as explained by the selfish herd theory. The video highlights the role of bird size and wing structure in determining flight patterns.

What new insight or understanding did you gain from this video?