Adelie penguin census November - December 1999 by Jim and Yvonne Claypole following their winter at Cape Denison. A shapefile with the colony boundaries is available but counts are not available. On 2 March 2016 David Smith of the Australian Antarctic Data Centre contacted Jim Claypole to see if he and Yvonne still had a copy of the counts as the Australian Antarctic Data Centre does not have a copy of the counts. Jim and Yvonne recall emailing the results of their survey to the Australian Antarctic Division soon after returning to Australia after wintering at Cape Denison in 1999. On 11 April 2016 Jim Claypole advised David that unfortunately they had not been able to find any record of their survey and they didn't have emails from that time.

Penguin counts conducted between 25 November and 2 December 1997. The census covered the following areas and rookeries in the Cape Dension area: rookeries north of Gadget Hut, outside Greenholm Hut and both sides of harbour, Penguin Knob, Azimuth Hill, Memorial Hill, Lands End Ridge, below Sorensen's Hut, east of Sorensen's Hut. A total of 24542 penguins were censused for the Cape Denison area, excluding McKellar Island Rookeries. The fields in this dataset are: Area Rookery locations Number