Researchers: Birds Know Flying in V-Formation is Energy-Efficient

Scientists at the Royal Veterinary College in London have solved a centuries-old puzzle: why do some birds fly in a formation resembling the Latin letter V. Using modern technology, they confirmed that it's all about conserving energy. Most drivers know that following a large truck saves gas because the truck is pushing a lot of air around it, creating a partial vacuum behind it, so the car encounters less resistance. According to Steven Portugal, a researcher at London’s Royal...

© La Voix de l'Amérique - jeudi 30 janvier 2014