Add any information you learn about bird bones to this page.

We learned that flying bird bones are hollow but a penguin's bones are solid. I think penguins have solid bones because they swim alot and then waves hit the penguins, so if they had hollow bones they would break their bones, then become extinct. I think they have solid bones because they live in cold water.

Bird bones are very very very very very very very very very very very solid for penguins.
Did you know that the wrist of a bird is under the thumb?Did you know bird bones are hollow?
they are hollow