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
Tristram's woodpecker Tristram's woodpecker The Tristram's woodpecker (kor.: 크낙새 khunak-sae, jap.: Kitataki) ("Dryocopus javensis richardsi") is a Korean subspecies of the white-bellied woodpecker. It was firstly identified and described by English scholar and ornithologist Henry Baker Tristram in 1879. The Tristram's woodpecker, with its 46 cm length, is among the largest woodpeckers. Both the tuft and the cheek patches are crimson red; its upper parts are black, which contrast with its white underparts, wing tips and a white rump. It has four toes of which two are directed backwards. Its tailfeathers are firm. Its native name was derived from the strange call