Leaves falling during a windy day then the female hornbill is seen fixing its nest with its bill, Great Indian Hornbill Buceros bicornis, Khao Yai National Park, Thailand

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