| .םיספ תינק (437 | ||||||||||
| ||||||||||
|
לעש סופספהו ,רתוי ימרקו בחרה ןיעה ספב ונממ תלדבנ ,ןורימזל דואמ המוד :םיספ תינק | ||||||||||
|
Subspecies and Distribution.
Acrocephalus schoenobaenus W and C Palearctic, N of Mediterranean, E into Asian USSR. Winters C Africa. | ||||||||||
Descriptive notes.12-14 cm, 9-15 g, wingspan 17-21 cm. Close in measurements to Willow Warbler but noticeably bulkier, with longer bill and broader rump and tail.Rather small, quite robust warbler, epitome of streaked Acrocephalus . Well-marked above, with striking cream supercklium offset by dark crown, and tawny rump glowing between dull olive-brown, rather softly streaked back and brown tail, Sexes simeilar, no seasonal variation. HabitatIn contrast to other Acrocephalus, extends from high arctic down to mid-latitudes, from boreal through temperate but only marginally to Mediterranean zone, ranging east not far beyond west Palearctic. Accordingly adapted to cool, often cloudy and moist climates.Breeds in wide variety of low dense vegetation or in moist depressions. Attracted to clay and gravel pits. Less closely linked to lake sides, river banks, and wetlands than most congeners, and usually avoids wetter reedbeds in standing water. Food and FeedingChiefly insects, also some plant material outside breeding season. Feeds predominantly low down in dense vegetation, notably reeds and rushes, also in cereal fields and periphery of bushes.Breeding.Mid Apr to mid Jul in Britain and N-W Europe, Jun in Finland. Nest site, in variety of tall vegetation or low bushes. On ground or up to 50 cm above. Nest, deep cup, rounded to cylindrical, with loosely woven outer structure of grass, plant stems and leaves, moss, and sedges, often with spiders' webs, with thick inner layer of finer leaves and stems, lined with reed flowers, hair, and plant down.5-6 eggs, sub-elliptical, smooth and glossy, very pale green or olive-buff, finely and and liberally speckled and mottled olive overall. Incubation 13-15 days, by female only, or with limited help from male. Movements.Migratory, entire breeding population wintering in Africa south of Sahara, from Senegal east to Ethiopia and S to eastern Cape Province and N Namibia.Status and ConservationNot globally threatened. Has increase in N Europe.Israel.In Israel subspecies Acrocephalus schoenobaenus common passage migrant over much of the country, also very rare and irregular winter visitor. |
| |||||||||
| HOME | NEXT | |||||||||
