“A shapeshifting flying serpent that paralyzes its victims with a whistle and drains them dry of blood.”
Something in the south of Chile empties animals of their blood, and the Mapuche have long known its name. The Peuchen — piuchén, piwichen — is a shapeshifter whose favourite form is a flying serpent, a snake with bat's wings that announces itself with a shrill whistle repeated three times. Its gaze paralyses; its whistle, in the darkest tellings, kills outright; and what it leaves behind is a carcass drained dry.
The creature occupies rare ground between folklore and natural history. Chile's first naturalists took it seriously enough to describe it, colonial dictionaries recorded it, and the common vampire bat — which really does drink the blood of sleeping livestock — still carries the vernacular name piuchén. Scholars have even asked whether this old Mapuche vampire is the ancestor of the modern chupacabra.
The Legend
No two accounts hold the Peuchen to one body. It is a flying snake, a lizard with bat wings, a bird the size of a rooster, a bug-eyed frog with squat broad wings; around Ovalle it wore a parrot's beak and wings, a toad's body, and a snake's tail. The shapeshifting is the point: the Peuchen can be nearly anything, and the only constants are the whistle, the paralysing stare, and the thirst.
It hunts by stillness. The whistle or hiss stuns its prey — some say the gaze alone paralyses — and the creature feeds at leisure on the blood of animals and of humans asleep in the forest. Flocks found exsanguinated in the morning were laid at its door. Against it there is exactly one recourse: the machi, the Mapuche healer, who alone can counteract the creature's hypnosis with herbal cures.
The Record
The paper trail is long. The missionary Andrés Febrés set down the first printed reference in 1765 — 'SERPENT: Vilú: another they say flies, pihuchen' — noting that its hiss brought death to those who heard it. Juan Ignacio Molina, Chile's first naturalist, described in his natural history a winged quadruped the size of a rabbit with fine cinnamon fur; a later lexicographer concluded the abbé had been deceived by the gift of a rare dead animal presented to him as a piuchén.
Richard Longeville Vowell's 1831 memoir carried accounts from the Aconcagua Valley, and the missionary Father Augusta recorded in 1916 that the creature sucks the blood of people and animals, drying the body of its victims. The ethnographer Ricardo Latcham judged the belief the most common myth among Chilean peasants, of undoubted indigenous origin — likely carried south from northern Andean cultures into Mapuche lands.
The Lore
The name is its own field note: Mapudungun piwichen resolves into piwün, 'to dry,' and che, 'people' — the one who dries people. The etymology matches the crime scene, and it matches an animal: the common vampire bat, Desmodus rotundus, feeds by night on the blood of livestock and is known in Chilean Spanish by the same word, piuchén. The myth and the mammal have been drinking from the same herds all along.
That overlap keeps the Peuchen current. When the chupacabra panic spread through the Americas, scholars noted the parallel and asked whether the piuchén was its precursor — a blood-draining shapeshifter blamed for dead livestock long before the goat-sucker got its name. In Mapuche and Chilote tradition it never went away: a shrill whistle sounding three times in the night forest is still nothing to answer.
Field Notes
- ✦ An early folkloric parallel — and possible precursor — to the modern chupacabra.
- ✦ Its lethal whistle and paralysing stare are its chief weapons; the whistle sounds three times.
- ✦ Can assume almost any animal shape, from winged serpent to rooster-sized bird.
- ✦ Named from Mapudungun piwün-che: 'one who dries people.'
- ✦ First set down in print by the missionary Andrés Febrés in 1765.
Case File
- Classification
- Shapeshifting vampire serpent
- Category
- Shapeshifter
- Territory
- Mapuche territory, southern Chile
- First Sighted
- 1765 (first printed reference, Andrés Febrés)
- Habitat
- Mountains, caves, and waterways
- Reported Size
- Variable, often a giant flying serpent
- Also Known As
- Piuchén · Piwichen · Pihuechenyi