Plain-breasted piculet 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 grey color with slight pale barring and a light yellowish-brown,
Tawny piculet with white. In other regards, the sexes are similar; the cheeks and neck are tawny and the ear coverts brown. There is a slight white moustachial stripe and white streaking above and behind the eye. The throat is cream, and the breast and belly are yellowish-brown, sometimes with white streaking on the breast. The wings are brown and the upper tail blackish, except for the central feathers which are white. The beak and legs are grey and the iris rufous, with a greyish ring of bare skin round the eye. The tawny piculet is endemic to the Amazon rainforest of