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Family [Slavkovye] Of sylviidae |
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Gray eastern bluebird Sylvia of communis Of latham, 1787 Name of view of other languages
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Field signs. It is somewhat smaller than the garden eastern bluebird with the greyish-light- brown top and the bright bottom; throat is white. During the singing the male inflates throat and distends feathers on it and on the darkness. Song - quiet, hasty and [khriplovatyy] [slavochnyy] talk and loud, sharp and hoarse tail piece like: [vi]-[chi]-speech- Ritchie -[chuchi] . Cry hoarse, nasal [ved]-[ved]-[ved] and jerky hissing ([Syroechkovskiy], [Rogacheva], 1980). Propagation. The European form, which penetrates into average Siberia only in the south and also, apparently, being settled to the east, but is less intensive than garden eastern bluebird. It populates bushy brushwood of steppe, wooded plain, on the edges of the woods it goes in the taiga zone, and on the river valleys with the bushes - into the mountains (Yenisey part of Western [Sayana], the valley r. Of [kazyra] in eastern [Sayane]) ([Rogacheva], 1988). In the Minusinsk basin the usual being nested form (Prokofiev, 1987), while in the steppe forest-plantations - frequently and numerous. Thus, in The [iyusskoy] wooded plain gray eastern bluebird was especially numerous in the poplar landings of 20-30- summer age with the well developed underbrush (80 [osobey]/[km]2) and in the strips from the acacia along the railroads (40 [osobey]/[km]2). Along the [ostepnennym] slopes of knolls near Krasnoyarsk gray eastern bluebird rarely nests in the brushwood of sweetbrier and hawthorn (Yudin, 1952). In The [usinskaya] basin it was usual in the park forest, where it populated brushwood of bushes in [lozhbinkakh] between the slopes. Is known a number of the flying iies of gray eastern bluebirds in the central-taiga Yenisey (peaceful, 62o 15 ' N): On June 14, 1979. one bird fell into the arachnoid network in the weeds of [mirnovskoy] clearing. On June 10, 1980. the singing male is encountered in [olshannike] near the peaceful. On July 3, 1986. in the osier beds of the left-bank floodlands of the Yenisey is also noted the singing male ([Rogacheva], 1988). Places of inhabiting. The clearly expressed bird of bushy brushwood during the meadows, the cinder and the cuttings down, in the rare forest, on the edges, in the fields and so forth in the steppe they are often satisfied by brushwood of weeds ([Ryabitsev], 2001). Phenology. They arrive flying already on the foliage , to the south - in the very end of April - beginning of May, into middle latitudes - in the middle - the end of May. Flying away goes in essence in August, from the steppe regions they disappear at the beginning of September ([Ryabitsev], 2001).
In laying of 3-7 eggs, it is more frequent than 5-6. On the painting they are very different and to resemble the eggs of rural swallow, [kamyshevki]-[barsuchka], accipitral eastern bluebird, [zheltogolovoy] wagtail. Most frequently the background of shell pale- is greenish, is yellowish or is slightly brown, figure - from the light rare specks or the attack to the large and clear dark spots, either in the form continuous marble figure or this the distinct specks of reddish, olive, and it is more frequent - brown or gray color. Spots can be evenly distributed along the entire surface of egg, either only at the dull end in the form of cap or halo. Male and female hatch the sizes of the eggs 16-21 X of 12-16 mm., beginning from the discarding of last egg, 11-13 days. During this period male continues actively to sing, and it occurs, which draws the second female, that also nests. Nestlings without the down, with the pink or meat color opening, on the basis language two dark points, on the tip of language are two dark strips, the edge of oral cavity (inside) yellow, [klyuvnye] rollers pale yellow. They sit in the nest of 10-12 days ([Ryabitsev], 2001). Nourishment. It feeds by insects. It destroys many wreckers of forest and agriculture. It eats up also juicy fruits and berries ([Syroechkovskiy], [Rogacheva], 1980).
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Multiplication. Nest - always low- above the earth in the bushes, brushwood of nettle, wormwood or horse sorrel ([Syroechkovskiy], [Rogacheva], 1980). Nest is deep. The depth of chute comprises usually more than 4/5 its diameter. The border from the white clusters of plant down is well expressed on the upper edge of nest. Walls in essence from stems and leaves of cereals, very friable and being translucent. Bedding from thin [stebelkov], sometimes with the admixture of rootlets, horse hair and plant down. The diameter of nest 80-110 mm, the height of nest is 60-100 mm, the diameter of chute 60-70 mm, the depth of chute 50-70 mm (Mikheev, 1996).![Gray eastern bluebird. [V]. [Zabugin]'s photos](http://www.deadbird.org/photo/rbcu/large/pic4.jpg)
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