Varzea piculet Snethlage who collected birds in Brazil for two decades. The specific name refers to ""várzea"", the Brazilian name for the seasonally flooded forested area close to the Amazon River. There are no subspecies. This bird occasionally hybridises with the white-barred piculet "(Picumnus cirratus)". The varzea piculet is a small species, some in length. The male differs from the female in having variable amounts of red on the fore and mid-crown; this red patch is the result of the crown feathers having broad red tips, and the rest of the crown in males and the whole crown in females is black
White-browed piculet a ring of bare pinkish or reddish skin. Males have a small golden-yellow patch on the forehead which females lack. Juveniles are duller in colour than adults, greener above and greyer beneath. The beak is grey, the iris is red and the legs are yellow or orange, the feet having just three toes, (four being the norm in the woodpecker family). In southern Myanmar and southeastern Thailand, where their ranges overlap, the white-browed piculet can be confused with the very similar rufous piculet ("Sasia abnormis"), but differs in the white streak above the eye and the darker beak. The white-browed