ASPECTS OF BREEDING CHRONOLOGY AND SUCCESS OF THE ANTARCTIC SKUA Catharacta maccormicki AT MAGNETIC ISLAND, PRYDZ BAY, ANTARCTICA
| Posted: |
09/08/2021 |
| Author(s): |
Cindy Hull, Michael D. Whitehead, Robyn Carter |
At Magnetic Island, an east Antarctic coastal site, the breeding timetable of Antarctic Skuas was
similar to that reported from other sites. Breeding success ranged between 62 and 65 per cent over
the three seasons 1986/87. 1989/90 and 1990/91. This is high compared with most previous studies
and seems related to a high Adelie Penguin: Skua nesting number ratio and consequent high food
availability. Most mortality was due to eggs being stolen by other skuas.
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