Description
The Great Spotted Woodpecker is 23–26 centimetres (9.1–10 in) long, with a 38–44 centimetres (15–17 in) wingspan. The upperparts are glossy black, with white on the sides of the face and neck. A black line zigzags from the shoulder halfway across the breast (in some subspecies nearly meeting in the center), then back to the nape; a black stripe, extending from the bill, runs below the eye to meet this latter part of the zigzag line. On the shoulder is a large white patch and the flight feathers are barred with black and white. The three outer tail feathers are barred; these show when the short stiff tail is outspread, acting as a support in climbing. The underparts are dull white, the abdomen and undertail coverts crimson. The bill is slate black and the legs greenish grey.
Males have a crimson spot on the nape, which is absent in females and juvenile birds. In the latter, the top of the head is crimson between the bill and the center of the crown instead.
Despite its contrasting plumage, the Great Spotted Woodpecker is often an inconspicuous bird. The large white shoulder patch is the feature that most easily catches the eye. When hidden by the foliage, its presence is often advertised by the mechanical drumming, a vibrating rattle, produced by the rapidly repeated blows of strong bill upon a trunk or branch. The drumming of this species is shorter than that of the Lesser Spotted Woodpecker, and fades away at the end. It is audible from a great distance, depending on the wind and the condition of the wood, a hollow bough naturally producing a louder note than living wood. The call is a sharp quet, quet.
The Great Spotted Woodpecker has several living subspecies. The paleosubspecies D. m. submajor lived during the Middle Pleistocene Riss glaciation (250,000 to 300,000 years ago); it was found in Europe south of the ice sheet. It is sometimes treated as a distinct species, but did not differ from the living Great Spotted Woodpecker of Europe except in size; the European subspecies of our time are probably its direct descendants.
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