: early May-mid Jun, usually adults, and again mid Jul-late Sep, usually juveniles, along salt water including the . Some have remained multiple weeks. Has bred in southern Maine but birds here might have travelled much further.
Miscellany: Yellow-crowned Night Herons are crab specialists. If Green Crabs continue to spread north and east along the Maine coast, we may be seeing more of these herons.
Last Reviewed: June 3rd, 2026