Final answer:
Hercules killed the Stymphalian birds using a weapon he acquired during a previous labor, which was a brass rattle given to him by the goddess Athena.
Step-by-step explanation:
Hercules killed the Stymphalian birds using a weapon he acquired during a previous labor. Hercules killed the Stymphalian birds using a weapon he acquired during a previous labor, which was a brass rattle given to him by the goddess Athena.
One of the tasks Hercules had to complete was capturing the Golden Hind, a sacred deer with golden antlers. After catching the deer, he was given a brass rattle by the goddess Athena. Hercules used this rattle to scare away the Stymphalian birds by creating a loud noise, causing them to fly into the air and be shot down by Hercules with his bow and arrows.