Most bird bones are very light, because extra weight would make it impossible to fly.
So that the bird is not too heavy to fly and to aid in the intake of oxygen as the bird breaths in flight.
bird bones are lighter
Bird bones because feathers are very light and the bones just depend on the type of bird.
If you mean "light" as in "the opposite of being heavy", then: Bird bones are hollow. Well, not completely, but if you look at the structures they are not as "filled up" as, say, human bones.
Tobi says: Bird's bones are hollow to help them fly,obviously to reduce weight when they fly. Human bones, on the other hand, are not hollow. We need strong bones to do the things we do, eg: walking, skipping, jumping etc...
Bird Bones in the Bughouse was created in 2004-10.
regular bird bones
So they are light and can fly easily. For example, the finch has no trouble flying but the ostrich is too heavy so it can't fly.
The kiwi is a bird and has a spine (backbone).
Human bones are thicker and denser; bird bones are thinner, hollow and mean less weight on the bird.
Birds do have bones.
No, bird bones are hollow.