The emu from Australia migrates too, but does so on foot because they are flightless, for that matter. When birds fly they flap their wings, an air rolls off from each bird wingtips in form of rotating vortex.These air rolls mean air immediately behind the bird is constantly pushed downwards, and the air behind it and on the sides is pushed upwards.If some birds flies in this formation, it gets a free lift which conserve energy by mooching off the air flow created by the birds flying alongside with the help of their wingtips. Save my name, email, and website in this browser for the next time I comment. Everyday Mysteries: Why do geese fly in a V? Hi Danielle Ariti, Explanation of V-shape Formation: When birds fly they flap their wings, an air rolls off from each bird wingtips in form of rotating vortex.These air rolls mean air immediately behind the bird is constantly pushed downwards, and the air behind it and on the sides is pushed upwards.If some birds flies in this formation, it gets a free lift which conserve energy by mooching off the air flow created … The leader is not fixed and changes throughout the flight. The mystery of why so many birds fly in a V formation may have been solved. But not all the birds that migrates fly in a v-shape: finches, varieties of hummingbirds and sparrows they all migrate, but these birds are too small to gaining an energy conserving benefit by flying in v formation. Now the first extreme close-up of birds flying in a V formation is providing some answers. In future studies, the researchers will switch to more common birds, such as pigeons or geese. Smaller birds create more complex wakes that would make drafting too difficult. Scientific American: Why do migratory birds fly in a V-formation? This is because when a bird flies, the tips of both its wings create a rotating vortex. Illustration: iStock. Greylag geese fly in v formation to make migration more energy efficient. Anyone watching the autumn sky knows that migrating birds fly in a V formation, but scientists have long debated why. 65 % of the birds species do migrate. So, why do they fly in this particular formation? Fantastic topic! The V formation is the most common formation there are other formations like, when birds travels in large groups in the air, this is also one of a kind of formation. Thanks for the article ! Squadrons of planes can save fuel by flying in a V formation, and many scientists suspect that migrating birds do the same. It becomes difficult task for a predator to single out an individual bird from the group, and a bird that is leaves or left behind the group is more likely to be hunt, eaten and killed by it’s predator. Sign up for membership to become a founding member and help shape HuffPost's next chapter. What’s the science behind why some birds fly in v-formation? At first glance, the behavior is simple. Not all migrating birds even fly, for that matter: the flightless emu from Australia migrates too, but does so on foot. Why do Flock of Birds fly in V formation? Murmuration is a term given to describe flock of starlings. A new study of ibises finds that these big-winged birds carefully position their Hi Ryan, It’s a defence mechanism which protects the birds flying in group against it’s predators: every bird feels safe when they’re in the groups. But we don’t yet know how or when each leader is chosen. If we have as much sense as a birds we stay in formation with those headed where we want to go. There are two well-supported and complementary explanations for … https://boingboing.net/2019/05/07/why-birds-fly-in-a-v-formation-2.html. The findings likely apply to other long-winged birds, such as pelicans, storks, and geese, Usherwood says. Not all migrating birds fly in a v-shape: varieties of hummingbirds, finches, and sparrows all migrate,  but these birds are too small to gain an energy-saving benefit from flying in formation.