
Based on 1,487 research-grade iNaturalist observations in New Hampshire, Great Blue Heron is most often recorded in August; in New Hampshire it behaves like a summer visitor / breeder. It ranks #6 among birds recorded in the state in our data.
Ardea herodias
Great Blue Heron in New Hampshire by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also seen in New Hampshire in August

Wild Turkey

Ruby-throated Hummingbird

Mallard
Common Loon

American Goldfinch

Cedar Waxwing

Broad-winged Hawk
Eastern Phoebe
Places to look in New Hampshire
White Mountain National Forest
Franconia Notch State Park
Odiorne Point State Park
Mount Washington State Park
State ParkRhododendron State Park
Pawtuckaway State Park
FAQ
When does Great Blue Heron appear in New Hampshire?
Mainly April–September, with the most records in August.
How common is Great Blue Heron in New Hampshire?
It ranks #6 by number of iNaturalist observations among birds in New Hampshire (1,487 records in our sample).