Field signs. A small dimly painted, burovato-gray above, whitish bottom chiffchaff with unclear yellow eyebrow and without stripes on the wings. Legs are black. Creek - a short whistle "fyuit" (like all penochek). Usual song tenkovki "shadow-TINGES-Tien tyun." Siberian tenkovka sings differently than tenkovka western subspecies. Her song AY Tugarinov refer to as "ti-vi-ty-viyu" song sometimes interrupted the other, silent and difficult to support audio (Syroechkovsky, Rogacheva, 1980). Distribution. In contrast vesnichke more numerous in the southern part of central Siberia and prefers forest with some dark rocks, and sometimes dark taiga with glades and understory. In the middle and northern taiga and the forest is found mainly on melkolesyu, cutting down around towns and in floodplains. In the tundra goes where there is bushland on the banks of reservoirs. By words DV Vladyshevskogo, tenkovka in spreading to the south is becoming more "forest" (Rogacheva, 1988). Under the Krasnoyarsk and Minusinsk Basin, it multiplied in the forests, including in the closed dark stands (Vladyshevsky orally. Post op. Rogacheva on, 1988), found in borah, and mixed forest. Vstrechena S. Prokofiev in larch pine-field bands with sparse understory (18 animals / km 2). Typically, the entire forest belt Sayan (Sokolov et al, 1983; Petrov, Rudkovsky, 1985; Prokofiev, 1987). Normally, or in rare borah and chopping forest. In podtayge Basin Greater Kemchuga numerous in the dark taiga (25 animals / km 2), and usually in the remaining forests (6,4-7,8 individuals / km 2) (Naumov, 1960). The same clear commitment to the dark stands in a podtayge River basin. Flood plain: many tenkovka here in the spruce-fir forests (14 animals / km 2), usually in birch (9) and pine forests (2) and rarely in the riverine bushes (0.2 species / km 2) (Ravkin et al, 1987 ). In the southern taiga largest of penochek. In Priangare largest in opushechnoy part pihtachey in small-leaf forests of pine borah, to slash areas in shelkopryadnikah (26-48 animals / km 2, usually at the center pihtachey and pine cuttings (6-8 individuals / km 2) (Vladyshevsky, 1975 , 1980; Vladyshevsky, Shaparev, 1976). Ravkinu By S. (1984), in Priangare tenkovka numerous in the dark lesobolotnyh complexes (17-29 animals / km 2) and the felling of pine (10-11), usually in the watershed pine forests, mixed riverine forests and bushes on the meadows (1-6 individuals / km 2). eniseyskoy In the southern taiga (59-60 o with. Rd.) were numerous in prieniseyskih high floodplain forests and hvoyno-deciduous forests with glades (18 and 23 individuals / km 2). In the lower valley and forest edge and the Yenisei river meadows with the island forests usually (an average of 6 individuals / km 2) (Bursky, Vakhrushev, 1983) In the middle taiga unequally distributed on the Yenisey. In the south subzone, a Vorogova (61 o N) tenkovka - the first in the number of chiffchaff, missing only in residential settlements and the felling of last year, the maximum number of nesting - in the floodplain willowy (62 specimens / km 2), in second place on abundance - opushechnaya of dark riverine forests (30), the third - uninhabited settlement Arrow (26 animals / km 2). The Peace (62 o 15 'with. Rd.) Is the most populated tenkovkami also Livoberezhna floodplain Yenisei (50-60 animals / km 2); many tenkovok high Right floodplain and nadpoymennoy terrace in the fir groves with vkrapleniyami wet birch and olshanikov (10 -- 15 individuals / km 2). In the small-cedar, larch forests, and to slash areas, it is rare, usually near streams or opushek (0,5-6 individuals / km 2). Place of tenkovok - mirnovskaya field. In the north sub (Alin, 63 o 20 'with. Rd.) High strength tenkovok allocated Livoberezhna floodplain Yenisei (87 animals / km 2), especially priruslovye willowy and birch, as well as clearing of the non-residential village and the surrounding areas of taiga with young adolescents ( 30 and 36 individuals / km 2) (Rogacheva et al 1978). In eniseyskoy northern taiga (63 o 30 '- 66 o 30' with. Rd.) Tenkovka numerous to nesting in pripoymennyh lecah (willowy, olshaniki), the multilevel riverine forests in the fir felling. In extreme northern taiga (Angutiha, 66 o 10 'N), biotopicheski more suitable for tenkovki, its strength was the highest (Rogacheva, Vakhrushev, 1983). In eniseyskoy forest (68-69 o with. Rd.) Tenkovka also been numerous in the riverine forests of high, willow and other bushes. In the floodplain Yenisei in gnezdovoe time in 1977 tenkovka was too: 194 specimens / km 2 in a typical, and 97 - in the southern forest (Rogacheva et al, 1983). In subzone bush tundra at the mouth of Yenisei (70 o N) tenkovki were numerous in all ernikovyh tundra and floodplain willowy (13-108 special / km 2) (Ravkii, Gleyh, 1981). North of the Gulf of individual couples tenkovok marked A. J. Tugarinovym (1908) to Golchihi (71 o 40'c. Rd.). In 1980, O. A. Chernikov met in the willowy at the mouth of the river. Golchihi a lot of singing males and a few nesting pairs. At the South-West Taimyr tenkovka found at nesting in the extreme northern taiga from Norilsk pyasinskoy lakes and forest, an isolated pocket of nesting found VV Leonovichem downstream Agapy (71 o 30 'with. Rd., The southern subzone typical tundra), some years tenkovki not nest and Norilsk Lakes (Krechmar, 1966). In Taimyr, there are indications that tenkovka nest somewhere in the mountains Putorana (Zyryanov, Larin, 1983) and in the river basin. Upper Taymyry - in the subzone typical tundra (Pavlov et al, 1983). In June 1968, three zaletnyh tenkovki on different dates were met at the Ust-Tarei (74 o 15 'N) (Vinokurov, 1971). At East Taimyr tenkovka not found either in the forest or in the subzone bush tundra, with the exception of a rather vague instructions VN Skalona that he had heard the fall of 1933 tenkovki voice "on the river Hatange" (Scalon, 1935). In the north of Evenkia the northernmost point of likely nesting tenkovki - a neighborhood lake. Essey (68 o 30 'N) and Lake. Chirinda where OA Chernikov in 1979 found her in a small number of shrubs in the bush on the fringe of the forest and the shores of rivers and lakes (Rogacheva, 1988). Habitats. Inhabit a variety of forest habitats, mostly coniferous and mixed forests with understory, but not too dark and damp. In the tundra nest among the willowy height with a meter or more (Ryabitsev, 2001). Phenology. Krasnoyarsk Under the first song - in early May, sletki - often second half of July, kochevki - since late August departure - the middle of September (Yudin, 1952; Krutovskaya, 1958). In Angutihu (66 o 10 'N) arrives May 30 - June 6, building nests - 10-12 June, nasizhennye masonry - June 30 - July 2 (Syroechkovsky, Rogacheva, 1980). Reproduction. The building nests tenkovki very similar to the nests of other species penochek, but it is not always available on the ground, sometimes you can find it and the low from the ground (75 cm) in the thick branches elovogo undergrowth or shrub juniper. In litter, you can see some feathers. Eggs from tenkovki smaller than the vesnichki (Mikheyev, 1996). In laying 5-9, 6 more eggs. Their color white (fresh look tender pink-yellowish), with a few small dark brown or black spot, the size of 14-19 mm x 10-13. Nasizhivanie continues 12-14 days, the male is not feeding the female, and often does not care, and the chicks and no worries from the slot. The female usually sits tightly and closely bay and frighten away not fly away. The young vyluplyayutsya pink, with a weak pushkom gray head and back, mouth tawny, klyuvnye rollers pale yellow. Length of stay in the nest - 12-15 days (Ryabitsev, 2001). Nutrition. Feeds insects, including water (Syroechkovsky, Rogacheva, 1980). 
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