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#birdsoxygen
wtfearth123
·
9 months
Text
Birds have hollow bones, but not for the reason you might think. It’s not to make them lighter, but to help them breathe better. Their lungs extend into their bones, allowing them to get more oxygen for flying.
#birdfacts
#hollowbones
#birdanatomy
#birdsoxygen
#flyhigh
#naturewonders
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