Once a widespread and common species, the lesser adjutant has undergone a rapid decline in numbers recently, and is now rare throughout its range. This very large stork has long legs, neck and beak, and an upright posture. It is dark grey to black on the wings and back, and white on the underside. The head and neck are naked and yellow, but red in breeding males. Juveniles are duller and less glossy with more down on the head and neck.