A breeding colony of gannets, usually on an isolated rock.
- ‘Today it's the world's largest single rock gannetry with 40,000 pairs returning to breed each year.’
- ‘The Science article includes a picture of the gannetry on Bird Island, the largest in the world, by a Port Elizabeth photo-journalist and author.’
- ‘Naturalists with sturdy sea legs can take a trip out to the gannetry at Bass Rock or stay on land and observe it from North Berwick's Sea Life Centre.’
- ‘The off-shore islands, which are part of the estate, provide sanctuary for several world-famous bird colonies including the exceptional Eilean Dubh gannetry.’