Talk:Faunus/@comment-26299202-20151023044109/@comment-25396609-20151023050225

Not to mention having them fold up "ridiculously small" would require a large number o extra joints, which would cease to be avian wings to begin with.

Birds don't have lowe density bones, they have HOLLOW bones, not to mention a very specific body shape that allows them to be aerodynamiv enough to fly.