Wild bare headed Greater Adjutant, Leptoptilos dubius, preening feathers with huge rustic bill gracefully on a windy day in Buriram, Isan, Thailand

vulture greater adjutant stork preen beak plucking peck ciconiiformes aves wildlife bird ornithology buri animalia endangered feather animal ciconiidae ram pterotillomania buriram swallower behavioural chordata scavenger thailand nature leptoptilos species adjutant asia wild natural bone isan maladaptive leptoptilos dubius endangerment wilderness southeast wedge forest close up bill disorder outdoors calcutta coat of arms no people