How to use "raven" in a sentence

The sun is shining into the canyon and a raven has just flown across the blue sky above my head

8.15 am The raven appears

Like the raven, the mosquitoes seem to arrive on time

The raven

As the sky grows brighter, I think of the raven

8.30 am The raven appears

If so, I will soon be as free as the raven.

The raven appears on time

I am also upset because the raven hasn't appeared