Source: Pathfinder Bestiary, pg(s). 55
A cauthooj resembles a long-necked flightless bird with a long beak and long, thin legs.
A cauthooj's awkward appearance masks its agility and cleverness. However, its greatest threat is its warbling, hypnotic song, which confuses those who hear it into fits of indiscriminate violence, even against themselves. The cauthooj then feasts on any such creatures who succumbed to the confusion. The horrific sound leads cauthooj hunters to stuff their ears with wax in order to survive its song.
Cauthoojs covet shiny baubles in a manner similar to magpies, and store their treasures in lairs nestled in caves. They do not particularly value wealth and are often just as happy to stash away colorful strings, broken glass, and cheap jewelry.
A cauthooj typically claims a large open expanse as its territory and will travel miles from its lair to hunt for food.