Cocoi Heron (Ardea cocoi) in flight against exposed Rupununi river bank near Karanambu in dry season (Photo by Kester Clarke

The Cocoi Heron (Ardea cocoi) is the largest heron in South America.

It has predominantly pale grey plumage with a darker grey crest and long legs. It is easily distinguished by its black cap, which shows long black plumes during breeding season.

The Cocoi Heron is a carnivore, it hunts fish and crustaceans in shallow water. It can often be seen along hinterland rivers and marshes, as well agricultural canals, hunting for fish and frogs.

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