Bird skeletons are all about light weight and leverage. The bones are porous and evolution over hundreds of millions of years has done the 'flight testing' to remove bone that isn't absolutely necessary.
Sternum
Sternum
You humans!
The boney kind.
Yes, we do since we are vertebrates. Cats, dogs, horses, cows, pigs, deer and many other belong in this major group.
Yes. Many fish have a skeleton made out bones like us humans.
A shark's "skeleton" is made of cartilage while human skeleton is made of bone.
gorrilas have been known to have a lot of similar structures as humans. also, they have been know to act and think like humans.
In the foreseeable future humans will not fly without technological aid. Humans can fly today with technology such as airplanes.
Crickets have an exo skeleton mostly made up of chiton. Humans have endo skeletons made of calcium carbonate.
The Muslim skeleton and the non Muslim skeleton are the same ..Muslims are humans just like every other religion.
Just like humans, it happened over time....