Where are the Great Blue Herons?

Heron watchers concerned about birds' disappearance from Colony Farm
I know that I buried a young one near the Hoy Creek hatchery a few weeks ago, and a few days ago I saw another young one that has taken its place. (we usually only have one heron in the area of the hatchery)
The article talks about noise! Well I myself am thinking of moving because of all the damm noise around here.