Peryton

The peryton is presented by Jorge Luis Borges (in his Book of Imaginary Beings) as a species described in a purported medieval manuscript and said to have lived in Atlantis until an earthquake destroyed that civilization and the creatures fled by flight. Borges frames the creature as a pseudo-natural-history entry — a literary invention that mixes imagined antiquity (Atlantis) and prophecy (a sibyl said to have foretold the perytons would lead to the downfall of Rome). Subsequent cultural transmission has taken the image into heraldic visual traditions (winged stags used as supporters or standards in late-medieval/early-modern European arms) and into modern fantasy fiction and tabletop gaming, where the peryton functions as a monstrous opponent or decorative charge rather than as an entity with an established folk cult.

The peryton is described as having the head, neck, forelegs and antlers of a stag combined with the plumage, wings and hindquarters of a large bird. Variant depictions simplify the concept to a deer with bird wings; heraldic precedents often show winged stags or winged hart supporters (examples associated with European heraldry such as devices linked to Charles VI of France and the Dukes of Bourbon are visually analogous), producing a range of images from fully hybridized stag-bird chimera to primarily cervid forms bearing wings.

In Borges's literary account the peryton has a striking supernatural behavioral trait: it casts the shadow of a human until it kills a human during its lifetime, after which it begins to cast its own shadow. Borges also attaches a prophetic/historical role via a sibyl's prophecy about Rome. Beyond Borges, modern sources (heraldry, fantasy novels, and role-playing games such as Dungeons & Dragons) present the peryton primarily as a monstrous or aggressive creature used as an opponent or emblem; the provided materials do not document additional consistent supernatural powers (for example, specific magical attacks or resistances) beyond its hybrid anatomy, predatory/monstrous role in fiction, and the shadow-property from Borges's entry.