The adult is readily recognisable in the field by its white head feathers, yellow-orange bill and pink legs. It is distinguished from other waders such as egrets and lesser adjutants by its extensively white body plumage and black wing coverts. However, the milky stork resembles and may therefore be confused with the partly sympatric Asian Openbill and various white egret species. Nevertheless, the egrets are smaller and completely white, and the Asian Openbill is also smaller and distinguished from the milky stork by the grey bill. In the northern part of its range around Vietnam, milky storks occasionally occur in sympatry with the closely related and morphologically similar painted storks. However, the painted stork is distinguished from the milky stork in adult plumage by the former's black and white breast band and wing coverts, pink inner secondaries, more restricted bare head skin, and generally brighter soft part colouration.