Upper bird is a juvenile, lacking the yellow facial stripe of adults. Note pinkish flipper linings. Yellow-eyed Penguin is the sole living member of the genus Megadyptes. It is a rather shy species with nests hidden in deep vegetation. It is endemic to New Zealand and listed as "Endangered" by IUCN. Its small declining population and restricted range are concerns. Although considered monotypic, a 2009 study (Boessenkool et al.) revealed substantial genetic differences between the South Island population and those in Auckland and Campbell Islands. The two groups may represent cryptic species. Canon PowerShot SX50 HS.
References:
BirdLife International. 2016. Megadyptes antipodes. The IUCN Red List of Threatened Species 2016: e.T22697800A93640603. http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22697800A93640603.en. Downloaded on 20 February 2017.
Boessenkool, S., Star, B., Waters, J.M. & Seddon, P.J. (2009) Multilocus assignment analyses reveal multiple units and rare migration events in the recently expanded Yellow-eyed Penguin (Megadyptes antipodes). Mol. Ecol. 18(11): 2390–2400.
Marchant, S. & Higgins, P.J. (coordinating editors) 1990. Handbook of Australian, New Zealand & Antarctic Birds. Volume 1, Ratites to ducks; Part A, Ratites to petrels. Melbourne, Oxford University Press.
Martínez, I., Christie, D.A., Jutglar, F. & Garcia, E.F.J. (2017). Yellow-eyed Penguin (Megadyptes antipodes). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from http://www.hbw.com/node/52467 on 20 February 2017).
Seddon, P.J. 2013. Yellow-eyed penguin. In Miskelly, C.M. (ed.) New Zealand Birds Online. www.nzbirdsonline.org.nz