Colomba delle nevi

Identificazione

Snow pigeons have a blackish head contrasting with a white neck collar and white underparts shading into ashy on the abdomen. Their backs are brownish-grey with a white patch on the lower back. Their wings are pale grey with three brown bands. Their black tails have a clear white band in the middle which narrows and curve forward to reach the tip of the outermost tail features. Young birds have narrow, pale buff margins to the feathers of the upper parts and wings. The white of the underparts is sullied with buff.

Tassonomia

Two subspecies are recognized:

Nome scientifico

Columba leuconota

Autorità

Vigors, 1831

Ordine

Columbiformi

Famiglia

Columbidae

Genere

Columba

Areale e habitat

They are resident birds in rocky hills of Afghanistan, Bhutan, China, India, Kazakhstan, Myanmar, Nepal, Pakistan, Tajikistan, and Turkmenistan. It is a common bird and has an extremely large range. The population is believed to be stable and for these reasons, the International Union for Conservation of Nature has assessed its conservation status as being of least concern.

Migrazione

Complete migrants

Comportamento

They frequent rocky hill sides and sequestered valleys, seen up to the snow line. They frequently feed in the fields during the day, but roost in the cliffs. They are generally shy and wary. Gatherings of 150 or more occur in winter, often in the company of hill pigeons and in some areas with rock doves also.<p>In the summer, they descend to lower heights and are found in pairs or small flocks. They breed in colonies. The nests are placed in crevices or caves in the face of cliffs or ledges of rock. Their nests are untidy interlaced structures made of sticks, grass, straw, feathers, etc. The nests are generally reused every year with minor repairing. Generally, two eggs are laid.<p>They feed on berries, grain, buds, bulbs, seeds, and shoots.

Conservazione

Tendenza della popolazione

stable