Great Hornbill Buceros bicornis two individuals perched opposite directions one preens while the other hides from a thick branch with leaves, Khao Yai National Park, Thailand

hornbills concavecasqued hornbill great hornbill buceros bicornis fruiting tree birds bucerotidae nest nesting foraging frugivore yellow bill tropical forest frugivorous bucerotiformes conservation fruits plumage southeast asia bird in the habitat perch habitat large bird anthracoceros branch rainforest khao yai tree national park thailand longlived jungle nature semievergreen insectivore forest world heritage tropical unesco feathers wings great indian burrow vulnerable pied fishing black casque massive bill indian subcontinent