Facing each other one covered by a branch on the right while they rest during a windy day, Great Hornbill Buceros bicornis, Khao Yai National Park, Thailand

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