Reference

Southwell C, Emmerson L, McKinlay J, Newbery K, Takahashi A, Kato A, Barbraud C, DeLord K & Weimerskirch H (2015b). Spatially extensive standardized surveys reveal widespread, multi-decadal increase in East Antarctic Adélie penguin populations. PLOS ONE 10(10):e0139877.
Southwell C, Emmerson L, Newbery K, McKinlay J, Kerry K, Woehler E & Ensor P (2015a). Re-constructing historical Adélie penguin abundance estimates by retrospectively accounting for detection bias. PLOS ONE 10(4):e0123540.