Opening the field guide
Ardea herodias
North America’s largest heron, a patient hunter with broad wings and a daggerlike bill.

Very large, blue-gray wading bird with long legs
Long, thick, yellowish bill and a dark stripe above the eye
Flies with its neck folded into an S and its legs trailing
Fresh and saltwater shorelines, marshes, ponds, rivers, sloughs, open fields, and agricultural land.
Often stands statue-still or stalks slowly in shallow water before striking quickly at prey.
Sandhill cranes fly with the neck extended. Great egrets share the heron’s shape but are entirely white.
Use binoculars and stay back from feeding birds and nesting colonies. Never share exact nest or rookery locations publicly.
Avoid forcing a bird to leave a feeding area or nest; repeated disturbance costs time and energy.
Great blue herons are widespread, but clean wetlands and undisturbed nesting sites remain essential locally.
Sources are linked below. Field marks vary with age, sex, season, region, light, and viewing distance.