noun, plural her·on·ries.
Examples from the Web for heronry
There is a heronry in the wood, and pigeons build in the larches.
Another notable reach shows the grounds of Altyre with its heronry.Bonnie Scotland|A.R. Hope Moncrieff
There is still a heronry at Dawyck, but not, I think, in an "Orch-yard."Highways and Byways in The Border|Andrew Lang
The herons have just returned to the heronry after an absence of many months.
But I declare I feel hurt that you should have been at the Heronry and not paid us a visit.Hester, Volume 3 (of 3)|Margaret Oliphant