Genesis 8:7-12

and he sent forth a raven, and it went forth to and fro, until the waters were dried up from off the earth. And he sent forth a dove from him, to see if the waters were abated from off the face of the ground; but the dove found no rest for the sole of her foot, and she returned unto him to the ark; for the waters were on the face of the whole earth: and he put forth his hand, and took her, and brought her in unto him into the ark. And he stayed yet other seven days; and again he sent forth the dove out of the ark; and the dove came in to him at eventide; and, lo, in her mouth an olive-leaf plucked off: so Noah knew that the waters were abated from off the earth. And he stayed yet other seven days, and sent forth the dove; and she returned not again unto him any more.