Great Hornbill Buceros bicornis perched on a branch relaxing then starts preening its left wing, Khao Yai National Park, Thailand

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