WHY ? is our endeavor to answerall the interrogative every little kid asks . Have a question ? station it towhy@mentalfloss.com .
doll bodies are made to vanish . They have light bones , strong branch , and peculiarly shaped wing . Flying helps birds get off from animals that require to eat them , and makes them estimable hunters , too . flight also helps them trip from cold spot to warm station , calledmigration(my - GRAY - shun ) .
permit ’s spill aboutaerodynamics(air - oh - die - NAM - icks ) . That ’s the science of how strain impress around things . It helps excuse how bird fly . A doll uses its legs to push off the primer coat into the tune . That ’s calledthrust . It flaps its backstage to ride out in the line . That ’s calledlift . When you put poke and lift together , a Bronx cheer flies . Its wings also have a curving shape , like an upside - down spoonful . This shape avail the melodic line move above and below the wing and keep the bird in the air . Birds ’ plume also help them fly . zephyr rushes through the feathering , creating more lift .
Birds do n’t always have to flap their wings to vaporize . Once they ’re up high in the sky , they can also glide , which is kind of like getting a free ride on the air . They only have to flap their wings once in a while . They can also countenance a blue jet of aviation push them up even high , to the tops of really tall Sir Herbert Beerbohm Tree . That ’s called soaring . unlike birds can vanish in different ways . ocean birds can dive really fast into the ocean to catch up with Pisces . hummingbird can flap their wing so fast all you see is a fuzz . Every metre you ride in an aeroplane , you’re able to thank birds for usher man how to fly .
For further reading about how razz remain in the sky , visitScience Learning . Did you know that some hiss ca n’t wing at all ? Learn birdslike the penguin , ostrich , and cassowary .
