Weyr

A Weyr is a collection of dragons and their riders, in the fictional world of Pern. Weyr is pronounced to rhyme with sphere.

The function of a Weyr is to fight Thread, an organism that originates in the Oort cloud of the Rukbat solar system, carried by a red planet with a loose elliptical orbit. The time during which Thread falls is called a Pass. These Passes last about 50 years, usually with a break of 200 years between.

A Weyr is headed by a Weyrwoman (rider of the most senior gold dragon) and a Weyrleader (the Weyrwoman's mate). A Weyr possess five types of dragons:

Gold
Bronze
Brown
Blue
Green

Gold dragons are female, and the rarest, greens are also female (non-breeding) and make up about 50% of a Weyr's population. There may be anywhere from 1-6 queens in a Weyr. All riders of queens are weyrwomen, but only one per Weyr may be the Weyrwoman at a given time.

Bronze dragons are the traditional mates of the queens, and the rarest type of male dragon.

Blues and browns are the mates of the greens, and are more common than bronzes.

Staff in a Weyr include the Dragonhealer, responsible for the care of injured dragons, the Weyrharper, responsible for the entertainment of dragonriders during their off-duty hours, a Headwoman, who controls the cooking and cleaning staff, a Healer, who takes care of the humans in a Weyr, and various others.

Weyr is also an extremely popular world-type for role-playing games.