QUIZ: Do You Know These Facts About Birds?
Birds are lightweight enough to fly due to their…
![Bird eats nuts off of a person's hand in Finland](https://www.quizscape.com/wp-content/uploads/2019/09/taneli-lahtinen-fQ2YX56wQ-Y-unsplash-38056.jpg?quiz=true&b=0&c=0&width=756&height=331&top=283&left=0&zoom=0.63)
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Instead of bones filled with marrow, birds have air cavities inside their bones. But this isn’t wasted space; in many birds, these pockets link to extended air sacs from their lungs.
Unsplash/@tanelah
Unsplash/@tanelah
Birds are lightweight enough to fly due to their…
- Lightweight feathers
- Hollow bones
- Small size
- Limited diet
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