| Summary: | on the western massif, suggested the presence of nests higher up the slope. Wilson's Storm-Petrel Oceanites oceanicus Not ob-served at Mount Biscoe during either visit. However, many were recorded from MV Nella Dan whilst beset in the pack ice to the north of Mount Biscoe, flying towards the massifs from 25 November 1985 onwards. Suitable breeding habitat exists at Mount Biscoe. South Polar Skua Stercorarius maccormicki One was seen during the first visit near the eastern massif. Several were observed on the beach and flying above the lower slopes of the western massif on the second visit. The species may possibly breed at Mount Biscoe. Conclusions Visits later in the breeding season are needed to obtain accurate data on the sizes of the breeding populations present. Counts made in late November when male AdClie Penguins were incubating and in January, immediately following the cessation of egg laying by Antarctic Petrels, would provide the required data. Acknowledgements Financial and logistical support was provided by the Australian Antarctic Division. Our thanks are extended to the crew of the MV Nella Dan and the helicopter personnel for their assistance. L.B. Parr and M.D. Whitehead critically reviewed an earlier draft.
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