Eudyptes moseleyi breeds on Gough Island and islands in the Tristan da Cunha group (St Helena to UK), and Amsterdam and St Paul Islands (French Southern Territories). The large population at Gough Island appears to have been stable between 1982 and 20008, although it suffered large declines prior to the 1980s. The majority of the population is in the Atlantic Ocean (c. 80%)12. Early records indicate that millions of penguins used to occur on both Tristan da Cunha and Gough Island12. The most recent population estimates indicate declines in excess of 96% for Gough and 98% for the main island of Tristan that have occurred over at least 45 and 130 years, respectively12. Numbers breeding at Inaccessible Island (Tristan da Cunha) may also have declined, albeit modestly, whereas numbers on Tristan appear to have been stable over the last few decades12. Current population estimates are 32,000-65,000 breeding pairs at Gough, 18-27,000 at Inaccessible and 3,200-4,500 at Tristan12. The population on Nightingale Island decreased from an estimated 25,000 pairs in 1973 to 19,500 in 200519. Although 100,000 breeding pairs were estimated on Middle Island in 1973, an observed decrease in the area of the colony due to fur seal encroachment suggests it has also decreased19. Overall, declines at Gough, Tristan, Nightingale and Inaccessible indicate an annual decline rate of c. 2% and a three-generation decline of 52%19. In the Indian Ocean, the Amsterdam Island population decreased by 57% between 1971 and 1993 to 25,000 pairs, whereas on St Paul Island the population increased from 4,000 to 9,000 pairs over the same period, following cessation of exploitation as crayfish bait11. Population trends during the last 10 years in the Indian Ocean are unknown.
No one has provided updates yet.