1) " Flights" -- As it applies to Flights Boston This article concerns the process of flying. For other meanings see Flight (disambig). Flight is the process of flying: either movement through the air by aerodynamically generating lift or aerostatically using buoyancy, or movement beyond earth's atmosphere by spacecraft. Animal flight Animal flight: Herring Gull The most successful groups of living things that fly are insects, birds, and bats. Each of these groups' wings evolved separately from different structures. Pterosaurs were a group of flying vertebrates contemporaneous with the dinosaurs. Bats are the only mammals capable of true flight. However, there are several gliding mammals which areable to glide from tree to tree using fleshy membranes between their limbs: some can travel hundreds of metres in this way with very little loss of height. Flying tree frogs use greatlyenlarged webbed feet for a similar purpose, and there are flying lizards which employ their unusually wide, flattened rib-cages to the same end. Flying snakesalso use a flattened rib-cage to fly, with a back and forth motion much the same as used on the ground. Flying fish can glide using enlarged wing-like fins, and have beenobserved soaring for hundreds of metres using the updraft on the leading edges of waves. It is thought that they evolved thisability to help them escape from underwater predators. Most birds fly, with some exceptions. The largest birds, the ostrich and the emu, are earthbound, as were the now-extinct dodos,while the non-flying penguins have adapted their wings for use under water. Mostsmall flightless birds are native to small islands, and lead a lifestyle where flight confers little advantage. The Peregrine Falcon is the fastest animal in the world; its terminal velocity exceeds 320 km/h while diving down on its prey. Among living animals that fly, the wandering albatross hasthe greatest...
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