Great Blue Heron
Ardea herodias
- KingdomAnimalia (Animals)
- PhylumChordata (Chordates)
- ClassAves (Birds)
- OrderPelecaniformes (Pelicans, Herons, Ibises, and Allies)
- FamilyArdeidae (Herons, Egrets, and Bitterns)
- GenusArdea (Great Herons and Egrets)
- SpeciesArdea herodias (Great Blue Heron)
About the Great Blue Heron
The great blue heron (Ardea herodias) is a large wading bird in the heron family (Ardeidae), common near shores of open water and wetlands over most of North and Central America, as well as Northwestern South America, the Caribbean, and the Galápagos Islands. It is occasionally found in the Azores and is a rare vagrant to Europe. An all-white population found in South Florida, the Florida Keys, and the Caribbean islands, is known as the great white heron. Debate exists about whether these white birds are a color morph of the great blue heron, a subspecies of it, or an entirely separate species.
The great blue heron was one of many species originally described by Carl Linnaeus in his 18th-century work, Systema Naturae. The scientific name comes from Latin ardea, and Ancient Greek ἐρῳδιός (erōdios), both meaning "heron".
The great blue heron's niche in the Old World is filled by the congeneric grey heron (Ardea cinerea), which is somewhat smaller at 90–98 cm (35–39 in) and sports a pale gray neck and legs, lacking the brown hues of the great blue heron. The great blue heron forms a superspecies with the grey heron, which also includes the Cocoi heron of South America, which... Wikipedia →
Closest Relatives at Saguaro National Park
Great Egret
Ardea alba
Green Heron
Butorides virescens
Black-crowned Night Heron
Nycticorax nycticorax
Snowy Egret
Egretta thula
Tricolored Heron
Egretta tricolor
Cattle Egret
Bubulcus ibis
American Bittern
Botaurus lentiginosus
Roseate Spoonbill
Platalea ajaja
White Ibis
Eudocimus albus
White-faced Ibis
Plegadis chihi
American White Pelican
Pelecanus erythrorhynchos
Glossy Ibis
Plegadis falcinellus
Global Distribution
Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.
where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is) · parks where it occurs — tap a pin for the sighting probability there
Parks Where Found
Quick answers
What are the chances of seeing a Great Blue Heron in Saguaro National Park?
About 10% of wildlife watchers report a Great Blue Heron sighting in Saguaro National Park, based on 6,042 verified sightings from GBIF citizen-science data.
When is the best time to see Great Blue Heron in Saguaro National Park?
December has the highest sighting rate for Great Blue Heron in Saguaro National Park in our monthly data.