Bird Sanctuary

Michaelmas Cay is a National Park and is recognised as one of the most important seabird breeding sites in the Great Barrier Reef. The small vegetated cay is an ideal habitat for thousands of ground nesting seabirds. At the height of nesting and breeding season (during Summer months) up to 20,000 birds have been observed. Breeding activity occurs throughout the year, most of the seabird species breed annually, Sooty Terns breed every 8.5 months.


Most Commonly found birds:
  • Sooty Terns
  • Crested and Lesser Crested Terns
  • Common Noddies


Less commonly found birds:

  • Silver Gulls
  • Ruddy Turnstones
  • Black Noddies
  • Black-Naped Terns
  • Bridled Terns
  • Roseate Terns

Download our Michaelmas Cay birdlife guide:View the Great Barrier Reef Bird Sanctuary PDF Document