Picumnus is a large genus of piculets. With a total length of 8–10 cm (3–4 in), they are among the smallest birds in the woodpecker family.

Picumnus: From Latin Pīcumnus (“a Roman deity personifying a woodpecker”), from pīcus (“woodpecker”), from Proto-Indo-European *(s)peyk- (“woodpecker; magpie”) + *mno-.

1/ Speckled piculet (Gõ kiến lùn đầu vàng, Picumnus innominatus)