Cockatrice

Origin and tradition

Medieval European lore describes the Cockatrice as a rooster-serpent monster born through unnatural egg lore and deadly to look upon.

Illustration in this atlas

A rooster-headed reptile with batlike wings, snake tail, and a gaze or breath that kills smaller life instantly.

References and further reading

1. en.wikipedia.org — Cockatrice

These references offer further reading. Accounts and depictions vary; the atlas illustration is interpretive artwork, rather than historical or scientific evidence.