sentence: description the group includes four birds , which can be divided into three main groups : the species from java and bali has a yellow eyebrow , underparts that are densely barred in yellowish and blackish-blue and a narrow blue band on the upper chest ; irena and ripleyi from the thai-malay peninsula and sumatra have a more orange eyebrow , a blue belly and a chest that is barred orange and dark bluish ( more orange towards the sides , blue towards the center ) ; and schwaneri from borneo has a blue mid-belly and yellow flanks and chest densely barred with blackish .