
Based on 2,272 research-grade iNaturalist observations in Connecticut, Great Blue Heron is most often recorded in August; in Connecticut it behaves like a seasonal. It ranks #6 among birds recorded in the state in our data.
Ardea herodias
Great Blue Heron in Connecticut 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 Connecticut in August

Osprey

American Goldfinch

Great Egret

American Herring Gull

Double-crested Cormorant

Ruby-throated Hummingbird

Wild Turkey

Red-tailed Hawk
Places to look in Connecticut
Connecticut College Arboretum
Marsh Botanical Garden
Gillette Castle State Park
Hammonasset Beach State Park
Bigelow Hollow State Park
Dinosaur State Park and Arboretum
FAQ
When does Great Blue Heron appear in Connecticut?
Mainly April–January, with the most records in August.
How common is Great Blue Heron in Connecticut?
It ranks #6 by number of iNaturalist observations among birds in Connecticut (2,272 records in our sample).