Great Blue Heron (Ardea herodias)
- Color: Blue-gray body, black head plumes
- Size: 38–54 in (97–137 cm)
- Wingspan: 5.5–6.6 ft (167–201 cm)
- Weight: 4–7.5 lbs (1.8–3.6 kg)
- Call: Harsh “fraaank” croak
- Lifespan: Up to 15+ years
The Great Blue Heron is the largest and most widespread heron in North America. Known for its elegant posture, slow wingbeats, and exceptional fishing skills, it’s a common sight in wetlands, rivers, and coastal environments across the United States.
Identification
These tall, slender birds have long legs, a dagger-like bill, and graceful S-shaped neck. Adults show blue-gray plumage with black head plumes and a white face.
Range & Habitat
Common throughout most of North America:
- Marshes & swamps
- Lakes & ponds
- Rivers & streams
- Coastal estuaries
Often seen standing still in shallow water, waiting to spear fish.
Diet
Primarily fish, but also eats:
- Amphibians & reptiles
- Small mammals
- Insects
- Occasional birds
Nesting
Nests in colonies called “heronries,” usually in tall trees near water.
- Clutch: 2–6 eggs
- Incubation: ~25–30 days
- Fledge: 55–80 days
Behavior
Often hunts alone, moving slowly and striking prey with lightning-fast precision. Known for long, slow gliding flight and high perching on trees or snags.
Conservation Status
Least Concern — populations stable and widespread.
FAQ
Are Great Blue Herons migratory?
Many northern populations migrate south, but birds in warmer regions remain year-round.
Why do they stand so still?
They wait motionless to ambush fish and other prey with a quick strike.
Do they only eat fish?
No — they eat amphibians, rodents, insects, and more.
How big can they get?
Adults can reach over 4.5 feet tall with a wingspan over 6 feet.
