从外貌上来看，这种鸟雌雄莫辨。它们的背部是褐色的，有着乳白色和红色的下腹。
In appearance , the birds of both sexes look very much alike with brown on the back and cream and red on the underside .
雌雄莫辨雌雄莫辨雌雄莫辨