The Tale of the Stymphalian Birds

At a Glance

• Central figures: Heracles, the greatest hero of Greece; King Eurystheus of Mycenae, who assigned the labors; and the Stymphalian Birds, a vast flock of man-eating birds sacred to Ares and nurtured by him for destruction.
• Setting: Lake Stymphalia in Arcadia, Greece, during the time of Heracles’ Twelve Labors - a penance assigned to him by Eurystheus after Hera drove him mad and he killed his wife and children.
• The turn: Heracles, unable to approach the marsh-dwelling birds on foot or fight them directly, receives bronze castanets from Athena - crafted by Hephaestus - and uses them to drive the birds into the open sky where his arrows can reach them.
• The outcome: Many of the birds are shot down; the rest flee Lake Stymphalia entirely, taking refuge on the island of Ares in the Black Sea, and the region is freed of their predation.
• The legacy: The completion of the Sixth Labor, added to the tally of Heracles’ twelve - a count that would eventually earn him his freedom from Eurystheus’s service and, in the larger myth cycle, his place among the immortals.

Heracles came to Lake Stymphalia carrying the divine castanets and a full quiver, but neither was much use yet. The marsh stopped him at the edge. The ground was black water and reed, impossible to cross, and the birds were settled deep inside it - thousands of them, bronze-beaked and poison-droped, their feathers stiff as blades. Getting close enough to kill even one would mean sinking to his knees in the mud and turning his back on the rest. He stood at the shore and looked at them. Then he lifted the castanets and began to play.

The Flock That Ate Livestock and Men

The Stymphalian Birds had not always haunted Lake Stymphalia, but by the time Heracles was sent to deal with them they had been there long enough to strip the surrounding countryside bare. They were sacred to Ares - raised by the war god, fed on living things, let loose on Arcadia for whatever purpose Ares had in mind or no purpose at all. Their beaks were bronze. Their feathers, if they shed them in flight, came down like arrowheads. Their droppings were toxic, and they shed those freely as well. Crops died where the flocks passed over. Livestock vanished. Travelers on the roads near the lake stopped returning.

The people of Arcadia had no means of fighting creatures that could kill from the air, and the marshy terrain that surrounded the lake denied anyone the kind of stable ground you need for an archer or a spearman to stand his work. The birds thrived precisely because nothing could reach them.

The Sixth Labor and the King Who Set It

Eurystheus had assigned ten labors originally - later stretched to twelve when he disqualified two on technicalities, as kings sometimes do when they want a man dead and the man keeps surviving. The labors were penance, technically. Heracles had murdered his wife and children during a fit of madness that Hera had sent upon him, and the Oracle at Delphi directed him to place himself in service to Eurystheus for ten years and do whatever the king required. Eurystheus required things designed to kill him.

The Sixth Labor was the Stymphalian Birds. Eurystheus sent Heracles to Arcadia knowing the marsh would be the problem - not the birds themselves, but the terrain that sheltered them. You could not burn a marsh. You could not drain it in any reasonable time. You could not wade in with a sword. What you could do, if you had the right tool and the right idea, was make the birds come to you.

Athena’s Gift and the Bronze Castanets

Athena had appeared to help Heracles before, and she appeared again here, arriving at the marsh with the krotala - bronze castanets made by Hephaestus, the smith god, in his forge on Lemnos or Olympus depending on who tells the story. They were not weapons. They were noise-makers, large and resonant, built to be struck together in a clatter loud enough to carry across water.

The gift was practical rather than miraculous. Athena did not offer Heracles a weapon that would kill the birds for him, or a path across the marsh, or armor proof against bronze feathers. She offered him a way to solve the problem he actually had: birds that could not be reached from the ground, but that would inevitably leave the ground if sufficiently startled. Hephaestus built the castanets. Athena carried them to Arcadia. Heracles received them and understood immediately what to do with them.

The Noise at the Edge of the Marsh

He went to the highest ground at the lake’s edge, set his arrows within reach, and struck the castanets together hard. The sound came off them sharply - a bronze-on-bronze clanging that did not echo so much as multiply, bouncing off the water and the trees at the marsh’s border and returning louder than it had left. He kept striking. The noise built.

The birds rose. They came up out of the reeds in a mass, disoriented, their formations broken by the suddenness of the sound. They filled the air above the marsh in chaos, beating against each other, thousands of wings in no order at all. And from the high bank, Heracles drew his bow.

He was the best archer in Greece - this is not disputed in any version of the story. He shot methodically, not quickly, working through the birds as they wheeled overhead. Each arrow found something. The dead birds dropped into the water or onto the bank. The living ones turned south, then west, then north, looking for somewhere the noise was not, and finding no such direction, they left the region entirely. They flew east and kept flying until they reached the island of Ares in the Black Sea, where they settled and remained, troubling Greece no further.

The Sixth Labor Completed

When the last bird was gone from the Arcadian sky, Heracles gathered what he needed as proof and turned back toward Mycenae. The marsh still stood. The lake still sat grey and flat under the hills. But the thing Eurystheus had sent him there to destroy was gone - scattered to the far edge of the known world - and the farmland around Stymphalia was quiet for the first time in years. He reported to the king. Eurystheus accepted the completion of the labor and began, no doubt, thinking about the seventh.