Birds
Cocoi Heron
Ardea cocoi
Standing motionless at the edge of a South American wetland, a cocoi heron waits with the patience of the continent’s largest heron species before striking at a passing fish with lightning speed.
Overview
The cocoi heron, Ardea cocoi, is a Least Concern wading bird and the largest heron species found in South America. Closely resembling North America’s great blue heron in size, shape, and hunting style, it ranges across an exceptionally broad stretch of the continent, from Central America south through nearly all of South America.
A familiar hunting style, a different continent
The cocoi heron’s ambush hunting technique, standing still before striking suddenly at prey, closely mirrors that of the great blue heron, a similarity that reflects how effective this strategy has proven across unrelated heron lineages worldwide.
Status
Least Concern, remaining widespread and common across its extensive range spanning Central and South America.
Cocoi Heron: common questions
How big is the cocoi heron?
It is the largest heron species found anywhere in South America, comparable in size to the great blue heron of North America, which it closely resembles.
How does the cocoi heron hunt?
It is an ambush hunter, standing motionless at the water's edge for long periods before striking suddenly to spear fish, amphibians, and other small aquatic animals with its long bill.
Where is the cocoi heron found?
It has an exceptionally wide range, found from Central America south through nearly all of South America, wherever suitable wetland and coastal habitat exists.
Is the cocoi heron related to the great blue heron?
They are closely related and often considered counterparts of each other, sharing a similar size, shape, and hunting style despite occupying largely separate geographic ranges.