White-throated Dipper

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The White-throated Dipper (Cinclus cinclus), also known as the European Dipper or just Dipper is an aquatic passerine bird found in Europe and the Middle East. The species is divided into several subspecies, based primarily on colour differences, particularly of the pectoral band.

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Description

The White-throated Dipper is about 18 centimetres (7.1 in) long, rotund and short tailed. The head of the adult (gularis and aquaticus) is brown, the back slate-grey mottled with black, looking black from a distance, and the wings and tail are brown. The throat and upper breast are white, followed by a band of warm chestnut which merges into black on the belly and flanks. The bill is almost black, the legs and irides brown. C. c. cinclus has a black belly band.

The young are greyish brown and have no chestnut band.

Voice

The male has a sweet Wren-like song. During courtship the male sings whilst he runs and postures, exhibiting his snowy breast, and when displaying he will take long and high flights, like those of the Common Kingfisher, accompanied by sharp metallic calls clink, clink, different from the normal zil.

Taxonomy

The nominate Black-bellied Dipper, C. c. cinclus, has no chestnut on the lower breast. It breeds in northern Europe and wanders to milder regions in winter. It has been recorded from the United Kingdom on many occasions.

The Dipper of Great Britain and Ireland, C. c. gularis and the central European race C. c. aquaticus are mainly resident.

The Cyprus population became extinct in the early 1950s. It has been described as a distinct subspecies, the Cyprus Dipper (C. c. olympicus), but its validity is doubtful.

Behaviour

The White-throated Dipper is closely associated with swiftly running rivers and streams or the lakes into which these fall. It often perches bobbing spasmodically with its short tail uplifted on the rocks round which the water swirls and tumbles.

It acquired its name from these sudden dips, not from its diving habit, though it dives as well as walks into the water.

It flies rapidly and straight, its short wings whirring swiftly and without pauses or glides, calling a shrill zil, zil, zil. It will then either drop on the water and dive or plunge in with a small splash.

From a perch it will walk into the water and deliberately submerge, but there is no truth in the assertion that it can defy the laws of specific gravity and walk along the bottom[citation needed]. Undoubtedly when entering the water it grips with its strong feet, but the method of progression beneath the surface is by swimming, using the wings effectively for flying under water. It holds itself down by muscular exertion, with its head well down and its body oblique, its course beneath the surface often revealed by a line of rising bubbles.

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