Great Hornbill Buceros bicornis seen flying down to land on a branch next to the nest, Khao Yai National Park, Thailand

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