Rashi on Genesis 30:39/רש"י על בראשית ל׳:ל״ט

1אל המקלות means at the sight of the rods.

2עקודים RING-STRAKED — the word is connected with the root עקד “to bind” — differently coloured at that place where they are bound, viz., the ankles of the forelegs and hindlegs.