Garden Reed Warbler

Acrocephalus dumetorum Blyth, 1849

Name of the species in other languages

Field signs. A small dimly-brownish top and bottom greyish bird. Song is very changeable, but the peculiar and easily recognizable, is usually separate from the loud cries and unhurried and syllables, each of which should be double or triple "check ... check ..." or "check-check-check." Sometimes it sounds a lot of chatter and syllables of the songs of other birds. Pozyvka - twice or thrice repeated "check ... check ..." (Syroechkovsky, Rogacheva, 1980).

Distribution. Typical look bushes and krupnotravya quite humid forest clearings and opushek, the shores of lakes. Widely distributed in the southern half of Central Siberia, to the north, at least until the border between the middle and northern taiga (Rogacheva, 1988).

In Minusinsk Basin as a whole, usually on the forest areas on the outskirts of forests in bushes along the taiga rivers in the foothills. In the depths of the mountain taiga is not. In some favorable habitats are numerous and very numerous, for example, in Iyusskoy forest (Khakassia) in different types of shelter belt: the dense, impassable thickets of Accacia and apple Siberian, alternating vysokotravnymi glades - 200 individuals / ^km 2 in Curtina landings pine, poplar, larch, buckthorn, shelyugi currants and golden with a well-developed understory and grass cover of the Village. Budenny - up to 580 individuals / km ^{2 (Prokofiev,} oral communication op. Rogacheva in 1988). In the foothills of the Krasnoyarsk, in most cases usual, but here it is too dry. In podtayge garden Reed Warbler in the river basin. Floodplain usually (2-4 individuals / km ^{2) (Ravkin} et al, 1987), and to the west, in a pool of Greater Kemchuga - many in the mosaic deciduous forests Kozulskoy plains (28 animals / km ²⁾ and usually (2-4 beings / km ²⁾ in mixed svetlohvoynyh hilly forests and the right Kemchuga on the outskirts of dark taiga (Naumov, 1960).

In the southern taiga Priangarya - multiple views of the wild slash areas and shelkopryadnikah (101 individual / km ^2), aspen and Berezovo-aspen forests (64), as well as in the pine forests and small-leaf forests of woods consists of pineries (20-36 animals / km ^{2) (} Vladyshevsky, 1975, 1980; Vladyshevsky, Shaparev, 1976). At suitable nesting sites kamyshevki with extremely high density: at a distance of 25-35 meters couple of pairs (Vladyshevsky, oral communication op. Rogacheva in 1988). In general, however, in yuzhnotaezhnom Priangare such sites are few. In the southern taiga left Yenisei usually in bushland on the ground in shelkopryadnikov verhovyahr. Keti (villages Komarovka, Losinoborskaya) (Moskvitin et al, 1977). In eniseyskoy southern taiga (59-60 ° N) - one of the many birds eniseyskoy floodplain. Places of mass nesting - floodplain grasslands with islands of forest and scrub (in 1977. -34-77 Individuals / km ^2), was also high strength at high flood plain of the village. Fomka and hvoyno-listvennom forest glades with a pos. Pogodaeva (Bursky , Vakhrushev, 1983).

At srednetaezhnom Enisee normal nesting species bright opushek boreal forest, fields, dense thickets of bushes and krupnotravya, meadow margins lush olshanikov and willowy. In the meadows kept at nekosimyh stations in the towns - in the bush nettle. For the whole sub-largest in non-residential villages (4-50, an average of 23 individuals / km ^2), a low left-bank floodplain Yenisei (8-29, an average of 21 individual / km ^2), usually in the riverine hvoyno-deciduous forests with glades (8 individuals / km ^2), residential townships, a narrow strip of shrubs along the right bank of Yenisei; rarely found in the felling and slash areas (Rogacheva et al, 1978). A large edge poymennogo mixed forests in the upper river. Eloguy. Penetrates on Yenisei in the southern part of the northern boreal forest: 21 Jun., 1977 20-year-old wild harvesting of the village. Baklaniha (64 ° 25 'N) could assume nesting (Rogacheva, Vakhrushev, 1983).

Habitats. To recruit other habitats plastic kamyshovok and less all linked to water. However, the most readily occupies bushes at the meadows, a lake, marsh, in floodplains and rivers, where there is more or less dense vysokotrave or cane. Also nest on the forest edge, Polyany in mountain shrub tundra in the forest chopping, in the bushes on the steppe river. More often, other kamyshevok selitsya next to the man - for garden, in zarosshih gardens, in raspberries and other garden shrubs, on the outskirts of the village, in cemeteries, the fences, etc. (Ryabitsev, 2001).

Phenology. Priletayut late spring, when fully dissolved trees and shrubs. Period mass departure - the second half of August. In early September, disappeared last birds (Ryabitsev, 2001).

Reproduction. Jacks suit in dense bush in the bush nettle, Lebedev and other Burian. Jack in the hemisphere suspended from strong vertical stems low over the ground (rarely exceeding 1 m). It is made of stems and leaves of cereals, Equisetum, with the addition of vegetable Pooh , Wide Web. Tray lining thin blade of grass, roots, fibers Luba, horsehair. In laying 2-7, usually 5-6 eggs. Their color varies widely. Fon greenish, pale olive or slightly olive-green (green morfa "), brown spots, drill-gray or olive, their size and abundance of very different, usually more at tupom end. More rarely, there are eggs with a yellow background or pink (red morfa "). The size of eggs 16-21 x 13-15 mm. Nasizhivat start from the middle of the process of egg laying or the completion of the wall, sitting member of both couples, but female, usually more. The duration of incubation of 12-15 days. A yellow chicks mouth, on the basis of language, two dark spots. The young are in the nest 11-13 days and leave, not yet umeya fly, but nimble lazaya among the shrubs and grasses (Ryabitsev, 2001).

In conducting work in the valley of the river. Kacha (56 ° 14 'N 92 ° 25' E) in June-August 1999, we received the following parameters found nests (mm):

Nests located in the bush nettle, raspberry ordinary and Sakhalin, Spirit.

Nutrition. Pitaetsya garden pests Reed Warbler (Syroechkovsky, Rogacheva, 1980).

References.