The Great Grebe is a large grebe of lakes and wetlands in southern South America. It dives to catch fish, crustaceans, and other prey.
In breeding plumage, the neck is reddish brown and the head bears dark plumes. Nonbreeding adults and juveniles have different plumage.
It dives for fish and small crustaceans. During breeding, it builds a platform of rushes in sheltered bays.
In northwestern Patagonia, pairs nest alone or in loose colonies.
In northwestern Patagonia, it gives a long, catlike call audible from far away and defends a territory.
In northwestern Patagonia, nonbreeding birds are duller, with a pale neck, white throat, and less prominent crest. Juveniles are paler and more uniform, with two dark lines on the face.
An extinction-risk assessment has not been added yet.