A breeding colony of herons, typically in a group of trees.
- ‘You're virtually guaranteed to see avocets, and you will certainly see herons, since the ancient woodland, with its noisy rookery, has the largest heronry in the UK.’
- ‘He also carried out an unauthorised development which involved the wanton destruction of protected trees and a heronry.’
- ‘In 1997, we estimated that about 800 pairs of wading birds nested at heronries on Canarsie Pol Island.’
- ‘For this purpose, keepers of parks, rabbit warrens and heronries were ordered to produce venison and wildfoul for their masters' tables.’
- ‘They usually nest together in colonies called heronries.’