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Hoatzins are very odd birds in a number of ways. They are essentially avian cows, feeding on green vegetation and digesting it by fermentation in enlarged crops (like cows do in their enlarged stomachs). Their taxonomy is an unsolved riddle, and when young they have unique short 'fingers' on the wrist that help the chicks move about in vegetation. Hoatzins move about in small flocks in vegetation at the edges of streams or lakes. These were photographed on an oxbow lake in Amazonian forest in southeastern Peru. |
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