Larus bulleri
Endemic. Nationally Critical. Data Poor. Recruitment Failure. Expected decline >70%.
I passed this and another photo to researcher Mike Bell, and he tells me: This bird will be E-226906… It was banded as a chick on 14/12/2014 on the Wairau River, it regularly over-winters at Lake Rotiti, but has also over-wintered at Kaikoura. We recorded breeding for the first time in Nov 2016 as a two year old (usual for this species). It has spent the last two winters at the Lake [Rotoiti].