Great Hornbill Buceros bicornis two individuals perched as the other on the right preens itself, Khao Yai National Park, Thailand

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