Hornbill in the Lesuer Ecosystem, Sumatra, Indonesia Rhinoceros Hornbill (Buceros rhinoceros), Sumatra, Indonesia. Primary threats to the population of rhinoceros hornbills are loss of habitat, poaching for the feathers and live bird market, and hunting for food. They are CITES listed as a Species at Risk (IUCN Lower Risk/Near Threatened). Photo: Paul Hilton for Earth Tree
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