I WONDER - Why Do Birds Have Hollow Bones?

Birds have hollow bones that make them lighter and are part of their respiratory system, aiding efficient breathing and flight. Despite being hollow, these bones are strong and dense enough to support flight. Penguins, however, have dense bones to help them dive deep in water, as they do not need to fly.

Why do birds have hollow bones?

• To help them swim better

• To make them more colorful

• To aid in efficient breathing and flight

• To make them heavier

What is a unique feature of bird bones that aids in their flight?

• They are covered in feathers

• They are filled with helium

• They are part of the respiratory system

• They are made of metal

What role do bird bones play in their flight?

• They are dense and support movement

• They are weak and flexible

• They are filled with air

• They are hollow and fragile

Why don't penguins have hollow bones?

• They have no bones

• They need hollow bones to fly

• They have bones filled with water

• They need dense bones to help them dive

How do penguin bones differ from those of flying birds?

• Penguin bones are lighter

• Penguin bones are denser

• Penguin bones are hollow

• Penguin bones are more colorful