|
|
|
|
Eurasian Woodcock
|
| |
|
| |
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.
Discussion
Ask a question about 'Eurasian Woodcock' Start a new discussion about 'Eurasian Woodcock' Answer questions from other users |
Encyclopedia
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. When threatened, the female can carry chicks between her legs, in her claws or on her back while flying, though this is rarely witnessed. The world population is estimated to be 15 million to 16 million birds.
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.
Taxonomy
The Eurasian Woodcock was given its current scientific name by Linnaeus in his Systema naturae in 1758. The binomial name is derived from the Greek skolopax, meaning 'woodcock', and Latin rusticus ('rural') and colere ('to live'). The species is monotypic and its closest relatives are the other woodcocks in the genus Scolopax.
Distribution and habitat
The Eurasian Woodcock has a large range, with an estimated Global Extent of Occurrence of 10 million square kilometres and a population of an estimated 15 million to 16 million birds.
About one third of the world's Eurasian Woodcocks 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. This species is the woodcock found through most of temperate and subarctic Eurasia. Northern and Asian populations migrate to southern Europe or south Asia respectively. Birds in milder western European countries and on Atlantic islands are resident. The populations breeding in north-west and southern Europe are mostly sedentary. The birds' spring migration commences in February; breeding territories are reached between March and May.
The species' required breeding habitat is large, unfragmented areas of broadleaved deciduous or mixed broadleaved and coniferous forest, with dense undergrowth of plants such as Brambles, Holly, Hazel, Gorse, Bracken or Bilberry. Breeding territories must include a mix of dry, warm resting places, damp areas for feeding, and clearings for flight. In larger woods, wide 'rides' (open tracks through the wood) and small clearings are important. In winter, Eurasian Woodcocks also use scrubland during the day but in freezing weather they may use intertidal mud.
Behaviour
Eurasian Woodcocks are crepuscular (most active at dawn and dusk) and rarely active during the day unless flushed, when they fly off with a whirring wing noise. The flight is somewhat owl- or bat-like; woodcocks fly fast and direct while migrating or crossing open country, but fly erratically with twisting and fluttering once in woodland. They are usually solitary and migrate singly, but may congregate when weather or geographical conditions force them to do so.
Breeding
The male performs a courtship display flight called 'roding' at dusk between April and June. Flying over the treetops with flickering wings and downward-pointing bill, it utters several deep croaks followed by a sharp squeak. A study of spectrograms of the vocalisations of male Eurasian Woodcocks showed that 95% of calls could be attributed correctly to individual birds, and concluded that counting roding males was a suitable method of monitoring the population.
Eurasian Woodcocks nest on the ground in low cover in woodland or tall heather. The nest is a lined cup or a slight hollow lined with dead leaves and other plant material.A single brood of four white or creamy eggs with light brown and grey blotches is laid; once the clutch is complete, incubation is performed by the female for between 21-24 days. The eggs measure 44 x 34 mm and weigh 26.5 g, of which 5% is shell. The downy, precocial young leave the nest immediately and fledge after 15-20 days, although they can fly short distances after 10 days. When threatened, the mother bird can fly whilst carrying small chicks between her legs, body and tail, in her claws or on her back. This behaviour is rarely witnessed.
Food and feeding
Eurasian Woodcocks forage in soft soil in thickets, usually well hidden from sight. They mainly eat earthworms, but also insects and their larvae, freshwater molluscs and some plant seeds. Because they rely on probing into the ground to find food, they are vulnerable to cold winter weather when the ground remains frozen. During the cold British winter of 1962-3, starving woodcocks were found feeding in urban areas and some were even forced to eat bird seed.
Nocturnal feeding occurs in frost-free pasture or long-rotation grass meadows chosen for the high densities of invertebrates found there. Fields with woodland within 1 kilometre are preferred to allow roosting during the day. There are only low densities of Eurasian Woodcocks in predominantly arable areas.
Relationship to humans
In many countries woodcock are hunted as game, as their size, speed and flight pattern makes them a very challenging shot. This is particularly popular in the UK; a witnessed 'right and left', in which a Woodcock is downed with each barrel of a shotgun, affords the shooter membership of the Shooting Times Woodcock Club.
The 'pin feather' of the Woodcock (the covert feather of the outermost primary) was used as a fine paintbrush for miniatures, or as a delicate tool for moving tiny objects (eg. specks of dust). In the United Kingdom, the early arrival of migrant woodcocks in autumn was said to mean a good harvest, especially if they stayed until spring. It used to be thought that woodcocks flew to the moon during the months when they were not seen.
The English surname 'Woodcock' developed as a nickname from the bird, meaning 'a fool, simpleton or dupe'. In William Shakespeare's play, Love's Labours Lost, Berowne describes himself and his friends as 'four woodcocks in a dish', after discovering they have all fallen in love when they have sworn not to. The Eurasian Woodcock has been the subject of postage stamps from several countries.
External links
|
| |
|
|
