Uncommon and elusive green broadbill. Both sexes distinguished from other Bornean green broadbills by blue wash on belly; it is bright ultramarine in males and paler blue in females. Also note black “polka dots” on wings. Only found on Borneo, where it is restricted to hill and submontane mixed dipterocarp forest. Forages quietly for fruit in understory, often in pairs. Song is a dove-like ascending coo with a hiccupy beginning note.