The scarlet-backed flowerpecker (Dicaeum cruentatum), is a species of passerine bird in the flowerpecker Dicaeidae family. Only 9 cm (3.5 in) long this bird weighs only 7 to 8 grams (0.25 to 0.28 oz). The adult male is black and white on his underparts and navy blue above with a long broad bright red stripe from his crown to his upper tail coverts.