In the sky.
If you were a bird you would fly in the sky. If I was a bird I would fly in the sky. Shall is permissive meaning I give to you permission or it is allowed. Birds do fly without permission. This is why I replace shall with would.
The sky, full of birds.
yes......... all birds do..... maybe
planes birds stars and what not
Because of the weather.
Birds go up in the sky and have wings
Birds have Hollow bones, that makes it lighter so they can soar in the sky.
the mayans were really aware of the birds falling
yes
the same way birds into sky.
they don't.