The Brown Skua (Catharacta antarctica) is often referred to as Antarctic Skua (or vice versa); the taxonomy of Skuas is still a matter of dispute. Other names (probably owing to the high level of hybridization in this species) include Southern Great Skua, Southern Skua or Subantarctic Skua. The New Zealand M?ori call it H?koakoa. It breeds circumpolar in the sub-Antarctic and Antarctic zones.