Young: Similar to adults 'winter markings, but brown spots cover top of head, nape of neck and back. During flight: Black primary flight feathers, white secondary flight feathers. Short, white tail, tip covered with brown spots.
幼鳥：大致似成鳥之冬羽，但頭頂至後頸、背部皆為褐色斑；飛行時，初級飛羽黑色，次級飛羽白色；尾短，白色，末端有褐色斑。