WhyloWhylo

Animals · Ages 3–9

How do birds fly?

Birds use wings to move air and create lift. Flapping also helps propel them forward. Their wing shapes, feathers, muscles, and tails help them take off, steer, glide, and land.

Read or listen to the story

For little wonderers, ages 3–5

A flying bird's wings push air down, and the air pushes the bird up. Flapping helps it move. Its tail helps it steer.

A little deeper, ages 6–9

Air flowing around a wing produces pressure differences and is deflected downward, creating lift. Flapping can provide lift and forward thrust. Birds change wing and tail positions to control flight. Some ride rising air to glide, and some birds, such as penguins, do not fly through the air.

A Whylo Sample Story

Robin's windy afternoon

ArobinlandedonthegardenfencewhileBenwasdrawingatthetable.Thebirdtilteditshead,flickeditstail,andflewaway.Ben'spencilstoppedhalfwaythroughacircle.‘Itdidn'tevenneedaladder,’hesaid.

Auntiesatbesidehim.Togethertheywatchedfortherobin'sreturn.ThistimeBensawthequickwingbeats.‘Thewingsmoveair,’Auntiesaid.‘Theypushairdown,andtheairpushesuponthebird.Thatupwardforceiscalledlift.’BenwrotealargeLbesidehiscircle.

Abiggerbirdpassedoverheadwithhardlyaflap.‘Thatoneforgot!’Bensaid.Auntielaughed.‘Itisgliding.Airisstillmovingarounditswings.’Theywatcheditturn,changingtheangleofitswings.Bengavehisdrawingatailsothepaperbirdcouldhaveawaytosteertoo.

Therobincamebacktothefence.Itspreaditswingsandtailasitslowed,thenfoldedeverythingneatlywhenitsfeettoucheddown.Bentrieddrawingthelandinginthreelittlepictures.Hisfirstrobinlookedlikeapotato.Hissecondhadsplendid,enormousfeet.

‘Willmydrawingfly?’heasked.‘Onlyifwemakeitapaperairplane,’saidAuntie.Bendecidedtokeepthepicture.Outside,therealrobinlauncheditselfintotheairagain,givinghimonemorechancetowatch.

Ben and Auntie watch a robin glide with its wings spread in a breezy garden.
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A robin landed on the garden fence while Ben was drawing at the table. The bird tilted its head, flicked its tail, and flew away. Ben's pencil stopped halfway through a circle. ‘It didn't even need a ladder,’ he said.

Auntie sat beside him. Together they watched for the robin's return. This time Ben saw the quick wingbeats. ‘The wings move air,’ Auntie said. ‘They push air down, and the air pushes up on the bird. That upward force is called lift.’ Ben wrote a large L beside his circle.

A bigger bird passed overhead with hardly a flap. ‘That one forgot!’ Ben said. Auntie laughed. ‘It is gliding. Air is still moving around its wings.’ They watched it turn, changing the angle of its wings. Ben gave his drawing a tail so the paper bird could have a way to steer too.

The robin came back to the fence. It spread its wings and tail as it slowed, then folded everything neatly when its feet touched down. Ben tried drawing the landing in three little pictures. His first robin looked like a potato. His second had splendid, enormous feet.

‘Will my drawing fly?’ he asked. ‘Only if we make it a paper airplane,’ said Auntie. Ben decided to keep the picture. Outside, the real robin launched itself into the air again, giving him one more chance to watch.

What we learned

Wings interact with moving air to create lift. Birds use their wings and tails to control where they go.

One more little discovery

Watch birds from a safe spot on the ground. Count how many are flapping, gliding, or landing. Sketch the wing shapes you notice without approaching nests.

Talk about it together

What changed about the robin's wings and tail when it landed?

Our characters and adventures are fictional. Explore the science behind this question:

Smithsonian National Air and Space Museum: How Things Move through the Air

Keep wondering

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