saddleback, (Creadion, sometimes Philesturnus, carunculatus), rare songbird of the family Callaeidae (Callaeatidae) of order Passeriformes, which survives on a few small islands off New Zealand. Its 25-cm (10-inch) body is black except for the reddish brown back (“saddle”), and it has yellow or orange wattles at the corners of the mouth.