Notornis, 22 (4), 265-272
Article Type: Paper
The adoption of Whero Island as a breeding station by the dimorphic Stewart Island shag over the last 20 years is described. A review of other known breeding stations of this subspecies suggests that breeding sites are subject to periods of nontenancy. The relatively few records of the Stewart Island shag indicate a distribution restricted to Foveaux Strait, and the Otago coast at Moeraki and near Dunedin. The total population is unlikely to exceed a few thousand birds.