Grey-headed woodpecker Concern" rating is primarily based on the large distribution of the species. The grey-headed woodpecker is long and weighs . Specimens of the more widespread of the two Eastern subspecies, "P. c. jessoensis", are usually a little larger and heavier than individuals from the type locality. On average, it is somewhat smaller and lighter than the European green woodpecker. In the field, this distinction in size is difficult to make. Its size is approximately that of a Eurasian collared dove. Grey-headed woodpeckers have uniformly olive green upperparts, transitioning across the neck to a light grey, the head being that latter
Kaempfer's woodpecker Kaempfer's woodpecker The Kaempfer's woodpecker ("Celeus obrieni"), also known as Piauí woodpecker, is a species of woodpecker from Brazil. The type specimen, a female, was collected in the Brazilian state of Piauí in 1926. No other individuals were collected or seen and the bird was feared extinct, until a male was captured by Advaldo Dias do Prado during mist netting in 2006 in the state of Tocantins. It was known as the Caatinga woodpecker for some time, but this name is misleading and based on confusion between two places with similar names (see below). Normally, it has been considered a