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Ring-necked dove
The ring-necked dove (''Streptopelia capicola''), also known as the Cape turtle dove or half-collared dove, is a widespread and often abundant dove species in East and southern Africa. It is a mostly sedentary bird,〔〔 found in a catholic variety of open habitats. Within range, its penetrating and rhythmic, three-syllabled crooning is a familiar sound at any time of the year.〔 Its name is derived from the semi-collar of black feathers on the lower nape, a feature shared with a number of ''Streptopelia'' species. Like all doves they depend on surface water. They congregate in large flocks at waterholes in dry regions to drink and bathe.〔
==Description==
Their body feathers are darkest on the upper side, where they are coloured in dull tones of grey and brown, with shades of lavender on the nape. It is paler below, where a tint of pinkish lavender is usually present. The lower belly and crissum is white.〔 As with related species, they have white fringes and conspicuous white tips to the otherwise slate grey tail feathers. The tail pattern is particularly noticeable during the display flight.
Individual plumage variation is high, with some light and others almost sooty.〔 Males and females look alike, although the males are slightly bigger. They measure in length〔 and weigh .〔''CRC Handbook of Avian Body Masses'' by John B. Dunning Jr. (Editor). CRC Press (1992), ISBN 978-0-8493-4258-5.〕 The eyes are almost black, the bill is black and the feet are dark purple.〔〔
An immature is duller〔 and lacks the semi-collar of an adult. It also has buff edges to all the upper part and wing covert feathers, while the plumage below is broadly edged greyish-white.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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