sentences:  The head is strikingly patterned, with a black crown, white supercilia extending from the white forehead to meet on the back of the neck, and a grey face becoming brown on the neck.The eye ring and the base of the otherwise black bill are red.The Madagascan subspecies "C. t. bifrontatus" has a grey band between the bill and the white forehead, and the sides of the head are grey.