Seen feeding the female in the burrow while perched on a branch then a leaf falls, Great Indian Hornbill Buceros bicornis, Khao Yai National Park, Thailand

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