Adult Water pipits in spring plumage have greyish-brown upperparts, weakly streaked with darker brown, and pale pink-buff underparts fading to whitish on the lower belly. There may be some faint streaking on the breast and flanks. Their head is grey with a broad white supercilium. The outer tail feathers are white, and the legs, bill and iris are dark brown or blackish. In non-breeding plumage, the head is grey-brown and the supercilium is less distinct. The upperparts are more streaked, and the underparts are white, marked lightly with brown on the breast and flanks.
The sexes are similar although the female has, on average, a greyer head. Young birds resembles the non-breeding adult, but are browner and more streaked above with prominent streaking on the underparts.
Water pipits breed in the mountains of southern Europe and Asia from Spain to central China, along with the Mediterranean islands of Sardinia and Corsica. These birds migrate relatively short distances; some populations winter mainly in western and southern Europe and in northwestern Africa; in western Europe some birds show fidelity to the same wintering site, returning each year. Birds in Spain move only lower down the mountains in which they breed. Others winter at lower altitudes near their breeding areas and also in the Arabian Peninsula and northeast Africa. Some birds winter in Pakistan, northwest India, and southern China. Water pipits breed in alpine pastures and high meadows with short grass and some bushes or rocks. They are typically found close to wetter areas and often on slopes. Wintering grounds typically include coastal wetlands, marshes, rice fields, and similar habitats.
Water pipits are wary birds and if approached they fly some distance before landing again. They are active during the day spending most of their time foraging alone or in pairs; in bad weather, they forage more frequently and tend to concentrate around marmot burrow entrances. Water pipits typically sing from a perch or in flight. Their song consists of four or five blocks, each consisting of about half a dozen repetitions of a different short note. It is a sequence of about twenty tinkling ‘cheepa’ notes followed by a rising series of thin ‘gee’ calls, and finishing with a short trill. The call of these birds is a single or double sharp ‘dzip’. Water pipits leave their breeding grounds in mid-September, although eastern populations may start moving south before then. The spring migration starts in February and March and birds return to the breeding grounds in April and May.
Water pipits are carnivores (insectivores). They feed mainly on a wide range of invertebrates, including crickets and grasshoppers, beetles, snails, millipedes, and spiders. Barkflies, true flies, caterpillars, and homopterans can form a large part of the diet of fledglings.
Water pipits are mainly monogamous and form pairs, although both, the males and the females may deviate from this occasionally. To attract a female the male performs a display flight in which he climbs to 10-30 meters (33-98 ft), flies in an arc, and glides back down, singing throughout. The female constructs a cup nest from grass and leaves which is lined with finer plant material and animal hairs. The nest is hidden in vegetation on the ground, sometimes in a hollow. The normal clutch is 4-6 eggs laid from the end of April to early July. The female incubates the eggs for 14-15 days until they hatch. Chicks are altricial (helpless); they are fed initially by the male, with both parents sharing the duty after a few days when the female does not need to brood so often. The young fledge in a further 14-15 days and there may be two broods in a year.
Water pipits are not threatened at present but these birds suffer from climate change and are frequently hunted by local birds of prey.
According to IUCN Red List, the total population size of the Water pipit is 12,920,000-25,280,000 mature individuals. In Europe, the breeding population consists of 1,620,000-3,160,000 pairs, which equates to 3,230,000-6,320,000 mature individuals. Currently, this species is classified as Least Concern (LC) on the IUCN Red List and its numbers today are stable.
