A few more facts about them:
Despite their size they only weigh about five to six pounds, thanks to their hollow bones.
They typically lay between two to six eggs. Great Blue Herons at higher latitudes and in freshwater habitats tend to have more eggs per clutch on average.
Both parents take turns incubating the eggs for 4 weeks.
The young can first fly at about 60 days.
While some nests are built on the ground near a water's edge, great blue herons mostly nest in colonies in trees near water. These colonies are called "heronries". These nests can be 100 or more feet off the ground and can range from 50 to 500 nests per colony.
Great Blue Herons have specialized feathers on their chest that continually grow and fray. The herons comb this "powder down" with a fringed claw on their middle toes, using the down like a washcloth to remove fish slime and other oils from their feathers as they preen. Applying the powder to their underparts protects their feathers against the slime and oils of the swamps.
In Native American lore the Heron embodies wisdom and patience. Supremely capable at fishing and hunting, the Iroquois felt that the sight of one before a hunt was a very good omen for success.
I hope you found this interesting, and thanks for looking. Enjoy your day.