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
Ochre-collared piculet are chocolate. The tail is mostly black but the inner webs of the central two feathers are white, and the inner webs of the outer four feathers are whitish near the tip. The chin and throat are white with slight barring, and the underparts are white or cream heavily barred with black, especially on the lower belly. The iris is brown, the beak is black and slightly curved and the legs are grey. The ochre-collared piculet is native to South America, its range extending from southeastern Brazil and eastern Paraguay to northeastern Argentina. It is a resident and sedentary species