The Stymphalanian birds are a group of man-eating birds from Greek mythology. They are said to be the size of cranes, looking like ibises but with more powerful beaks. They will attack any who hunt them, killing them with their beaks. They can pierce any iron or bronze armour, but will catch their beaks in armour made of thick cork.
The birds were the pets of Artemis, but fled to Arcadia from a pack of wolves. They bred quickly and overwhelmed the townspeople. For his sixth labour, Heracles hunted and killed the birds with arrows dipped in the blood of the Lernaean Hydra.
Looks mighty intimidating… that beak! Yeesh. One of them coming after you would be enough… imagine if there were a bunch! Ooh Lordy.
Good thing we don’t see many of them these days. Good job, Hercles! We thank you.