Grab Epona and head to Lon Lon Ranch,and go straight past the bit where you played the chiken game when little,then look left where you will find a bunch of chikens.Ride over them with Epona until they attack.At this point stop still and equip your bow and arrow then shoot the chikens(still on Epona) until the attack has finished.Then if you have done this correctly you should have an extra 200 points on your card.