Oscar Dewhurst / Hoatzin (Ophisthocomus hoazin) perched on wooden bar overlooking oxbow lake. Manu National Park, Madre de Dios, Peru. September
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Bernard Castelein / Hoatzin, (Opisthocomus hoazin), perched by water, Municipal protected area of Pampas del Yacuma, Bolivia
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Bernard Castelein / Hoatzin ( Opisthocomus hoazin) at water's edge Pampas del Yacuma Protected Area, Bolivia
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Bernard Castelein / Hoatzin ( Opisthocomus hoazin) group , Pampas del Yacuma Protected Area, Bolivia
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Bernard Castelein / Hoatzin (Opisthocomus hoazin), climing on a vine, Madidi NP, Bolivia
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Alex Hyde / Hoatzin (Opisthocomus hoazin) Cocha Salvador ox-bow lake. Manu Biosphere Reserve, lowland Amazon rainforest, Peru.
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Alex Hyde / Two Hoatzin (Opisthocomus hoazin) on Cocha Salvador ox-bow lake. Manu Biosphere Reserve, lowland Amazon rainforest, Peru.
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Nick Garbutt / Hoatzin (Opisthocomus hoazin), pair on floating log in Cocha Salvador ox-bow lake. Manu Biosphere Reserve, Peru.
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Nick Garbutt / Hoatzin (Opisthocomus hoazin), pair on floating log in Cocha Salvador ox-bow lake. Manu Biosphere Reserve, Peru.
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Mark Bowler / Hoatzin (Opisthocomus hoazin) chick in the hand, showing claws on wings. The claws are a vestigial feature which is lost by adulthood. Rio Yavari, Peru
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Mark Bowler / Hoatzin (Opisthocomus hoazin) chick wing showing claw detail. The claws are a vestigial feature which is lost by adulthood. Rio Yavari, Peru (non-ex)
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Mark Bowler / Hoatzin (Opisthocomus hoazin) chick climbing out of water using claws on wings. The claws are a vestigial feature which is lost by adulthood. Rio Yavari, Peru (non-ex)
