The Eurasian woodcock (Scolopax rusticola) is a medium-small wading bird found in temperate and subarctic Eurasia. It has cryptic camouflage to suit its woodland habitat, with reddish-brown upperparts and buff-coloured underparts. Its eyes are set far back on its head to give it 360-degree vision and it probes in the ground for food with its long, sensitive bill, making it vulnerable to cold weather when the ground remains frozen. The male performs a courtship flight known as "roding" at dusk in spring. It is widely believed that the female will sometimes carry chicks between her legs whilst flying, though evidence of this is purely anecdotal. The world population is estimated to be 14 million to 16 million birds. Taxonomy The Eurasian woodcock was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his Systema Naturae under the current binomial name Scolopax rusticola. The genus name is Latin for a snipe or woodcock. The specific epithet rusticola is the Latin name of a gamebird mentioned by Pliny the Elder and Marcus Valerius Martialis. It was possibly a grouse. The species is monotypic: no subspecies are recognised. Its closest relatives are the other woodcocks in the genus Scolopax. Description Adults are in length, including the long straight bill, and have a wingspan. The Eurasian woodcock has cryptic camouflage to suit its woodland habitat, with intricately patterned reddish-brown upperparts and buff underparts. The head is barred with black, not striped like that of its close relatives, the snipe. It has large eyes located high on the sides of its head, giving it 360-degree monocular vision. The wings are rounded and the base of the bill is flesh-coloured with a dark tip. The legs vary from grey to pinkish. The species is sexually dimorphic, with the male much larger than the female, although the sexes cannot be separated in the field. Distribution and habitat About one third of the world's Eurasian woodcock breed in Europe, with more than 90% of the continent's population breeding in Russia and Fennoscandia. Their breeding range stretches from Fennoscandia to the Mediterranean Sea and Canary Islands and from western Europe to Russia. The population on the Azores is isolated from mainland Europe, resulting in subtle genetic differentiation. This species is the woodcock found through most of temperate and subarctic Eurasia. Northern and Asian populations migrate to southern Europe or the Indian Subcontinent, respectively.