Black-dotted piculet Foraging birds may repeat the song a few times and then fall silent for several minutes. Birds of this species forage in pairs, often widely separated, or alone. They occasionally join mixed-species flocks. They often "hitch sideways along branches," and they peck or drill like woodpeckers in rotting wood and at broken ends of branches. The taxonomy of "Picumnus" is controversial, and this taxon has been considered conspecific with the white-bellied piculet, conspecific with the golden-spangled piculet, and a synonym (incorrect name) of a subspecies of the scaled piculet ("P. squamulatus obsoletus"). Here it is considered a separate species following
Varzea piculet with white speckles. The upper parts of the body are chocolate-brown, sometimes with an olive tinge, and occasionally slightly barred with black. The tail is deep brown apart from the central pair of feathers, which are whitish, and the two outer pairs of feathers which have a whitish bar near the tip. The underparts are some shade of brown with light barring and streaking in darker brown and white. The iris is brown, the beak is black and the legs and feet are bluish-grey. The juvenile is similar to the female but the underparts are more heavily barred. This piculet