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
Lineated woodpecker Lineated woodpecker The lineated woodpecker ("Dryocopus lineatus") is a very large woodpecker which is a resident breeding bird from Mexico south to northern Argentina and on Trinidad. In 1760 the French zoologist Mathurin Jacques Brisson included a description of the lineated woodpecker in his "Ornithologie" based on a specimen collected in Cayenne, French Guiana. He used the French name "Le pic noir hupé de Cayenne" and the Latin name "Picus niger cayanensis cristatus". Although Brisson coined Latin names, these do not conform to the binomial system and are not recognised by the International Commission on Zoological Nomenclature. When in 1766