Tristan penguins update

Following the disastrous oil spill after the grounding, in March 2011, of the cargo ship MS Oliva on Nightingale Island, part of the Tristan da Cunha UK Overseas Territory (Brit. Birds 104: 229, 282) and home to half the world population of Northern Rockhopper Penguins Eudyptes moseleyi, the following update was published by BirdLife on 9th May. 'There are around 400 penguins remaining in the re...