Basilisco chilote

In Chilota tradition the Basilisco chilote originates as an egg laid by a chicken and incubated by a rooster; when it hatches it becomes a hidden, harmful animal that establishes itself beneath a human dwelling. Sources present this origin as a literal lifecycle: ordinary domestic birds produce the egg and a rooster’s incubation is part of its hatching. The myth is described as specific to the Chiloé Archipelago and is framed in the literature as syncretic — drawing on local Colo Colo motifs while borrowing more directly from European basilisk and cockatrice traditions.

Descriptions in the available sources are concise and consistent: the Basilisco chilote is described as having the crest of a rooster combined with the body of a serpent. No further standardized details about size, coloration, or other morphological features are provided in the sources consulted; descriptions are therefore limited to the rooster crest plus serpentine body motif.

The Basilisco chilote is documented as a parasitic household creature that lives in a hole it digs under a house and feeds on the phlegm and saliva of the people who live there. Its feeding causes the inhabitants to dehydrate progressively and eventually die. Its life cycle and behavior include being hatched from an egg incubated by a rooster and then living clandestinely beneath the dwelling while preying on residents' bodily secretions. The myth is explicitly linked to the cockatrice/basilisk family of egg-born bird–serpent hybrids.