Charles Spurgeon Commentary Genesis 8:6-7

"And it came to pass at the end of forty days, that Noah opened the window of the ark which he had made: and he sent forth a raven, and it went forth to and fro, until the waters were dried up from off the earth." — Genesis 8:6-7 (ASV)

And it came to pass at the end of forty days, that Noah opened the window of the ark which he had made: And he sent forth a raven, which went forth to and fro,

Sometimes alighting on the ark; then flying away again.