V formation

Rarity: Common

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Notion

Domain

Science and technology

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What Wikipedia says

A V formation is a symmetric V- or chevron-shaped (two sides of a triangle) flight formation. In nature, it occurs among geese, swans, ducks, and other migratory birds while in human aviation it is used mostly in military aviation, air shows, and occasionally commercial aviation.

Excerpt from the Wikipedia article “V formation”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: C. C. Trowbridge, Public domain, via Wikimedia Commons.