The ravens of the valley shall pick it out — i.e., the rebellious son shall die of a “grievous death” (Jeremiah 16:4). The propensity of ravens to attack the eyes is well known.
Related Commentaries of Proverbs 30:17
Proverbs 30:17
17 The eye that mocketh at his father, and despiseth to obey his mother, the ravens of the valleyg shall pick it out, and the young eagles shall eat it.