Plain-breasted piculet has assessed its conservation status as being of "least concern." Plain-breasted piculet The plain-breasted piculet ("Picumnus castelnau") is a species of bird in the woodpecker family. It is found in the Ucayali and Amazon floodplains in eastern Peru. Its natural habitats are subtropical or tropical moist lowland forests and heavily degraded former forest. A small bird with a short tail, the plain-breasted piculet typically grows to a length of . It is mostly grey on the face and its nape and upper neck are finely barred in an olive green color. Its mantle and back are an olive, brown or
White-wedged piculet are brown above, with pale edgings to the secondaries and tertiaries, and the tail is brown, the two central feathers being white, and there being a white patch on the outer edge near the tip. The throat, breast and belly are white with black scaling, the flanks and lower belly being less scaled than elsewhere. The iris is brown, the beak blackish and the legs grey. The juvenile is similar to the female but has a paler crown. The native range of the white-wedged piculet in tropical South America includes parts of Bolivia, southern Brazil and northern Paraguay; it is