After forty days Noah opened a window he had made in the ark and sent out a raven, and it kept flying back and forth until the water had dried up from the earth.
Genesis 8:6-7 (NIV)
I’ve mentioned the three land animals being a symbol of all people: wild animals, livestock, and creeping things.
I don’t think birds are people at all in the story. We already associate doves with the spirit of God, but ravens? Perhaps they represent something else entirely.
And the Lord said to Satan, “Where have you come from?”
Satan answered the Lord, “From roaming throughout the earth, going back and forth on it.”
Job 2:2 (NIV)