Uaua was the the most prominent planet within the Ua system of the Centrality, and home to the avian Quor'sav species. Centrality colonists introduced a virus to the planet that was merely carried by mammalian biology, but was fatal to avian species. As a result, non-avian species were not welcome or trusted on Uaua; even insect life on that world seemed to harass offworlders with undue prejudice.